Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS

Started Mar 27, 2013 | Discussions
nick101
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to PAUL TILL, Mar 28, 2013

PAUL TILL wrote:

You're correct - it's my mistake, and I apologise.

I was looking at the 14-150. I have no idea why I confused the two, unless it's just stupidity.

Even the 14-150mm goes for more than that! Are you sure you're not thinking of the 40-150mm?

Lucky for you, you didn't click buy, you would have had a bit of a shock when it turned up.

Not so - I did double check this time 

http://www.amazon.co.uk/Olympus-M-ZUIKO-DIGITAL-ED-40-150mm/dp/B0058G4066/ref=sr_1_3?ie=UTF8&qid=1364453564&sr=8-3

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LTZ470
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to PAUL TILL, Mar 28, 2013

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

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Martin.au
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

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Too many wrong facts.

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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Martin.au, Mar 28, 2013

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

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Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

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JCB123
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to pavinder, Mar 28, 2013

pavinder wrote:

JCB123 wrote:

A faster aperture version would be larger and heavier. A constant f4 version might not be too much larger, but f2.8 would be quite a beast.

There are not many choices in the native lens line up for exotic super telephoto. If you want a lot of reach you might want to consider using Canon, Nikon, et al lenses via an adapter. That will be manual focus and aperture only mind.

Native m43 options are Panasonic 45-200, Panasonic 100-300, Olympus 75-300.

Thanks for the comments John.

You are welcome

Yes, I imagined size/weight might be an issue.  And I'll compare reviews of those alternative lenses too.

Yes please do that. Look at slrgear, lenstip and photozone.

I saw the Panasonic 45-150, 45-175 and 45-200 at the shop today - definitely need to research the differences other than their FL.

I own the 45-200 and its a very good lens for the price.

I'd considered an adapter and DSLR lenses, but the main reason I've just bought into M4/3 is to reduce size/weight so I'd be contradicting myself a little.  But if adapters are cheap, I'll dig out my old FD Canon lenses and test them at a shop, see how they feel.

Well yes and no. A 300mm FF lens on m43 gives the same field of view as a 600mm lens on FF. With telephoto lenses it is reach that you are after so FOV is paramount, and the difference in size weight between a 300mm & 600mm optic is massive.

Regards

John

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PAUL TILL
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to nick101, Mar 28, 2013

nick101 wrote:

PAUL TILL wrote:

You're correct - it's my mistake, and I apologise.

I was looking at the 14-150. I have no idea why I confused the two, unless it's just stupidity.

Even the 14-150mm goes for more than that! Are you sure you're not thinking of the 40-150mm?

Lucky for you, you didn't click buy, you would have had a bit of a shock when it turned up.

Not so - I did double check this time 

http://www.amazon.co.uk/Olympus-M-ZUIKO-DIGITAL-ED-40-150mm/dp/B0058G4066/ref=sr_1_3?ie=UTF8&qid=1364453564&sr=8-3

Have you totally lost the plot? That link is for the 40-150mm.

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LTZ470
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Martin.au, Mar 28, 2013

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

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Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

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Martin.au
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

-- hide signature --

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FlickR Photostream:
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Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

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I will not only buy one but two no questions asked...

I presume your 100-300 won't focus in that situation at f4.8?

1) Why do you assume that IR's images have exactly the same lighting conditions? DPR certainly have stated that for their studio scenes that they do not guarantee the lighting. You are supposed to use their calibrated ISO tests to determine the accuracy of the camera's ISO.

2) This is your claim. You post the values from IR for whichever cameras you choose.

3)

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Martin.au
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Martin.au, Mar 28, 2013

http://www.dpreview.com/forums/thread/3203185

More tests done by others. Same results. OM-D exposure and ISO is about the same as most other cameras.

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Anders W
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

-- hide signature --

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FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

You are wrong about the "ISO fudging" LTZ. As Mjankor already pointed out, any deduction based on the shutter speeds and f-stops used in these and other studio samples rests on the questionable assumption that the light level is controlled and held constant.

There are other and better ways to check whether two cameras actually got the same light on the sensor at the same camera ISO (checking the saturation of the RAW files and see whether they match what we'd expect based on the DxOMark "measured ISOs" if the cameras have been given the same effective exposure, i.e., the same amount of light on the sensor). I have performed this check for the E-M5 versus a number of other cameras (GH2, GH3, G3, D800) and in no case found anything but marginal deviations.

This subject has already been beaten to death in a large number of other threads and it is perfectly clear at this point that there is no "ISO fudging" going on.

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LTZ470
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Anders W, Mar 28, 2013

Anders W wrote:

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

-- hide signature --

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I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

You are wrong about the "ISO fudging" LTZ. As Mjankor already pointed out, any deduction based on the shutter speeds and f-stops used in these and other studio samples rests on the questionable assumption that the light level is controlled and held constant.

There are other and better ways to check whether two cameras actually got the same light on the sensor at the same camera ISO (checking the saturation of the RAW files and see whether they match what we'd expect based on the DxOMark "measured ISOs" if the cameras have been given the same effective exposure, i.e., the same amount of light on the sensor). I have performed this check for the E-M5 versus a number of other cameras (GH2, GH3, G3, D800) and in no case found anything but marginal deviations.

This subject has already been beaten to death in a large number of other threads and it is perfectly clear at this point that there is no "ISO fudging" going on.

Would agree with you genst normally, but have shot the EM5 and GH2 extensively, EM5 has slower shutter many times...I do a consderable amount of birding and pretty consistent with tripod, settings etc...more blurred shots from EM5 than any other camera I have ever used...OIS on...OIS off...IBIS on...IBIS off...both on...both off...

You can pea on my leg...just don't try and tell me it's rain...lol...inconsistent lighting on ALL 5 cameras...then DxO using different lighting for each test?...uhhumm...I call BS...

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rrr_hhh
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to pavinder, Mar 28, 2013

pavinder wrote:

Just bought my OM-D today, and am considering which lenses to add on.  I currently only have the kit 12-50mm 3.5-6.3

My plan at the moment is to buy in the following order (when I have the cash)

1. Panasonic  35-100mm 2.8 - for longer shots and bright lens.

2. Panasonic 12-35mm 2.8 - brighter than the kit lens (but with rumours of an upcoming Olympus zoom with similar FL range I'm happy to hold off on this a while)

3. Panasonic 100-300mm 4.0-5.6 - all reviews and opinions indicate it's the best long lens.  I also saw a second hand lens at a good price today.

I'd avoid the 100-300mm Panasonic on an Olympus body : its IQ isn't better than the 75-300mm Olympus, while the second version of the 75-300mm Olympus is now priced competitively with the Panasonia while beimju lighter at the same time.

Only those who have a Panasonic body and really need the OIS have a reason to buy the 100-300mm. I may have a bad copy of the 100-300mm, but mine isn't able to focus at infinite when used at longer length than 225mm, whether manually or with AF. The contrast also sinks dramatically at the long end.

I had a Panasonic when I ordered it and the Olympus first version was much more expensive, but with an E-M5 and the second version of the 75-300mm I don't see any reason to buy the Panasonic, on the contrary.

But I'm a little unsure of the 100-300mm and wondering whether I should wait on this too, mainly because the lens is getting on for 3 years old so I wonder if there a strong likelihood of a new lens being released to supercede this, either a brighter lens to complete a Panasonic f2.8 trio, or maybe a comparable Olympus?

Further to this, would a 100-300mm f2.8 lens be:

a) possible to make   or

b) prohibitively heavy/large/expensive  anyway?

Thanks for your opinions.

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Martin.au
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

Why don't you shoot the OM-D and the GH2 back to back them. Same scene, same settings and post the results.

I love it when people ignore the calibrated tests, and the science, because "They know what's right".

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LTZ470
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Martin.au, Mar 28, 2013

Mjankor wrote:

Why don't you shoot the OM-D and the GH2 back to back them. Same scene, same settings and post the results.

I love it when people ignore the calibrated tests, and the science, because "They know what's right".

GH2 went bye-bye...keeping the OMD as the 12-35 and 35-100 hopefully will offset slow shutter speeds somewhat...love the Oly jpegs and as long as I keep the slow shutter in mind I can get around it...

I'll shoot it side x side with Nex-7 and look at double the shutter speed on the Nex-7 every time I click the shutter...

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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

Mjankor wrote:

Why don't you shoot the OM-D and the GH2 back to back them. Same scene, same settings and post the results.

I love it when people ignore the calibrated tests, and the science, because "They know what's right".

GH2 went bye-bye...keeping the OMD as the 12-35 and 35-100 hopefully will offset slow shutter speeds somewhat...love the Oly jpegs and as long as I keep the slow shutter in mind I can get around it...

I'll shoot it side x side with Nex-7 and look at double the shutter speed on the Nex-7 every time I click the shutter...

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Slow shutter does not exist. This has been proven many times with numerous examples included in this thread.

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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to pavinder, Mar 28, 2013

pavinder wrote:

Just bought my OM-D today, and am considering which lenses to add on.  I currently only have the kit 12-50mm 3.5-6.3

My plan at the moment is to buy in the following order (when I have the cash)

1. Panasonic  35-100mm 2.8 - for longer shots and bright lens.

2. Panasonic 12-35mm 2.8 - brighter than the kit lens (but with rumours of an upcoming Olympus zoom with similar FL range I'm happy to hold off on this a while)

3. Panasonic 100-300mm 4.0-5.6 - all reviews and opinions indicate it's the best long lens.  I also saw a second hand lens at a good price today.

But I'm a little unsure of the 100-300mm and wondering whether I should wait on this too, mainly because the lens is getting on for 3 years old so I wonder if there a strong likelihood of a new lens being released to supercede this, either a brighter lens to complete a Panasonic f2.8 trio, or maybe a comparable Olympus?

Further to this, would a 100-300mm f2.8 lens be:

a) possible to make   or

b) prohibitively heavy/large/expensive  anyway?

Thanks for your opinions.

EM5 100-300 shots...

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Anders W
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

Anders W wrote:

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

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Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

You are wrong about the "ISO fudging" LTZ. As Mjankor already pointed out, any deduction based on the shutter speeds and f-stops used in these and other studio samples rests on the questionable assumption that the light level is controlled and held constant.

There are other and better ways to check whether two cameras actually got the same light on the sensor at the same camera ISO (checking the saturation of the RAW files and see whether they match what we'd expect based on the DxOMark "measured ISOs" if the cameras have been given the same effective exposure, i.e., the same amount of light on the sensor). I have performed this check for the E-M5 versus a number of other cameras (GH2, GH3, G3, D800) and in no case found anything but marginal deviations.

This subject has already been beaten to death in a large number of other threads and it is perfectly clear at this point that there is no "ISO fudging" going on.

Would agree with you genst normally, but have shot the EM5 and GH2 extensively, EM5 has slower shutter many times...

Not sure even what you mean here. Slower shutter on E-M5?

Do you mean that 1/100 on the E-M5 is slower in practice on the E-M5 than the same shutter speed setting on the GH2? Or do you mean that the two cameras meter differently at the same camera ISO such that the E-M5 suggests a slower shutter speed at the same f-stop than the GH2?

As to metering, I have tested the meter of my E-M5 against the meter of my G1 under carefully controlled conditions. The G1 meter suggests 1/3 EV less exposure than that of the E-M5. This difference is, I would say, within the limits of normal tolerances, and might be explained by the fact that the G1, unlike nearly all other cameras, has DxO "measured ISOs" that are a bit higher, not lower, than the camera ISOs. So it needs to keep exposure down slightly compared to other cameras to prevent highlight clipping.

I do a consderable amount of birding and pretty consistent with tripod, settings etc...more blurred shots from EM5 than any other camera I have ever used...OIS on...OIS off...IBIS on...IBIS off...both on...both off...

Well, whether you get blurred shots is something completely different from "ISO fudging" isn't it? The E-M5 has problems with shutter shock (at least my copy does) with certain lenses, including the 100-300.

You can pea on my leg...just don't try and tell me it's rain...lol...inconsistent lighting on ALL 5 cameras...

What would the inconsistency amount to?

then DxO using different lighting for each test?

DxO using different lighting for each test? Don't know what you are talking about. Noone said anything like that.

If it's DPR you have in mind, Andy Westlake has made it perfectly clear that they make no attempt to control the light level in the studio where they shoot their samples and that nothing whatsoever can be made out of the f-stop and shutter speed settings as far as actual exposure (amount of light on the sensor) is concerned.

...uhhumm...I call BS...

You call what BS?

 Anders W's gear list:Anders W's gear list
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pavinder
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Anders W, Mar 28, 2013

Thanks for the extensive comments everyone.  I'm definitely going to check out the Olympus 75-300 version II before making a decision...

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LTZ470
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to Anders W, Mar 28, 2013

Anders W wrote:

LTZ470 wrote:

Anders W wrote:

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

-- hide signature --

--Really there is a God...and He loves you..
FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

You are wrong about the "ISO fudging" LTZ. As Mjankor already pointed out, any deduction based on the shutter speeds and f-stops used in these and other studio samples rests on the questionable assumption that the light level is controlled and held constant.

There are other and better ways to check whether two cameras actually got the same light on the sensor at the same camera ISO (checking the saturation of the RAW files and see whether they match what we'd expect based on the DxOMark "measured ISOs" if the cameras have been given the same effective exposure, i.e., the same amount of light on the sensor). I have performed this check for the E-M5 versus a number of other cameras (GH2, GH3, G3, D800) and in no case found anything but marginal deviations.

This subject has already been beaten to death in a large number of other threads and it is perfectly clear at this point that there is no "ISO fudging" going on.

Would agree with you genst normally, but have shot the EM5 and GH2 extensively, EM5 has slower shutter many times...

Not sure even what you mean here. Slower shutter on E-M5?

Yes...consistently slower...

Do you mean that 1/100 on the E-M5 is slower in practice on the E-M5 than the same shutter speed setting on the GH2? Or do you mean that the two cameras meter differently at the same camera ISO such that the E-M5 suggests a slower shutter speed at the same f-stop than the GH2?

GH2 consistently gave me better shutter speeds and sharper shots in trying conditions than the EM5 has...when the EM5 has enough Shutter Speed it of course excels by far to my eyes...

As to metering, I have tested the meter of my E-M5 against the meter of my G1 under carefully controlled conditions. The G1 meter suggests 1/3 EV less exposure than that of the E-M5. This difference is, I would say, within the limits of normal tolerances, and might be explained by the fact that the G1, unlike nearly all other cameras, has DxO "measured ISOs" that are a bit higher, not lower, than the camera ISOs. So it needs to keep exposure down slightly compared to other cameras to prevent highlight clipping.

Fuji does the same and it is equal to SLOW Shutter Speeds...X-E1 and X Pro 1 are similar to EM5 in this regard...

I do a consderable amount of birding and pretty consistent with tripod, settings etc...more blurred shots from EM5 than any other camera I have ever used...OIS on...OIS off...IBIS on...IBIS off...both on...both off...

Well, whether you get blurred shots is something completely different from "ISO fudging" isn't it? The E-M5 has problems with shutter shock (at least my copy does) with certain lenses, including the 100-300.

Shutter Shock is another culprit that could be the problem as well...agreed will investigate a little further into this...

You can pea on my leg...just don't try and tell me it's rain...lol...inconsistent lighting on ALL 5 cameras...

What would the inconsistency amount to?

None, there is no inconsistency in Image Resource lighting...

then DxO using different lighting for each test?

DxO using different lighting for each test? Don't know what you are talking about. Noone said anything like that.

DxO has consistent lighting the same as Image Resource...is what I am saying...

If it's DPR you have in mind, Andy Westlake has made it perfectly clear that they make no attempt to control the light level in the studio where they shoot their samples and that nothing whatsoever can be made out of the f-stop and shutter speed settings as far as actual exposure (amount of light on the sensor) is concerned.

I never use DPR samples much at all to be honest because of the front and back focusing issues that goes on at times...

...uhhumm...I call BS...

You call what BS?

Whenever you shoot a Nex-7 at same ISO and the shutter speed is double that of the EM5...thats BS...should be by some amount, but not double?

Tell you what I'll do when I get to the U.S. Anders I'll do some testing with EM5 vs Nex-7 vs G3 and compare, BUT I have never went out with any GH2 or G3 or Nex-7 or FZ200 and not came back with out some keepers that are not blurred...the EM5 was the first for me, not one keeper out of 200+ shots all blurred due to low shutter speed...

Shutter Slap?...so your thinking thats what is causing the blurred EM5 shots?

I put it down to IBIS and my technique first round...we shall see soon I'll shoot them all side x side birding and compare shutter speed, ISO, and F-Stops...

Getting a lot less keepers with EM5 than ever before...but still learning...

-- hide signature --

--Really there is a God...and He loves you..
FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

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Anders W
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Re: Question about Panasonic Lumix G Vario 100-300mm F4-5.6 OIS
In reply to LTZ470, Mar 28, 2013

LTZ470 wrote:

Anders W wrote:

LTZ470 wrote:

Anders W wrote:

LTZ470 wrote:

Mjankor wrote:

Mjankor wrote:

LTZ470 wrote:

The 75-300 Oly is much slower than 100-300, take my word for it…I have owned and shot both extensively…the 75-300 cannot focus many times when the 100-300 can…the extra light the 100-300 allows is worth it in AF speed and Shutter Speed and it is still a challenge at times with EM5 as they fudged the ISO and the Shutter Speeds are slower than other cameras at equal ISO values, so for Birding and Nature you WILL need the fastest glass you can get on the EM5...

Moving Subject + EM5 + f/6.3 = Blurred photo...

YMMV...

-- hide signature --

--Really there is a God...and He loves you..
FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Too many wrong facts.

Basically, everything about the OM-D fudging ISO is wrong. THE OM-D uses the same shutter speeds (within 1/3 of a stop) as other cameras for any particular camera ISO value, as expected.

For more info, check out the rather long debate here:

http://www.dpreview.com/forums/post/51112064

As for focussing, I suspect that's wrong too. Most reports say the 75-300 is faster at focussing.

Lol…you think I said this because I haven't tested them side X side…MOST folks that say the 75-300 is faster have never owned the 100-300 much less used the two side x side…I have photos to prove my point do they their's?

Same tripod, same camera same distance...75-100 could not acquire focus...100-300 AF'd time and time again without any problems...75-300 really nice sized sweet lens, sharp and godd contrast...BUT cannot match 100-300 for AF or Speed...you WILL miss many shots with 75-300 that the 100-300 would have captured...f/5.6 vs f/6.7 the f/5.6 trumps f/6.7 everytime except in the brightest light...moving subject + 75-300 at f/6.7 + slow shutter speed EM5 = blurred photo...thats all i got to say about that

As far as fudging ISO…lol…again I challenge you (or anyone else) to look at Image Resouces and compare the Shutter Speeds at same ISO's on various models…lets say from Canon 60D, Nex-7, OMD, Panasonic GH2…and come back here and give us the findings...

That way you won't have to take my word for it…savvy?

You are wrong about the "ISO fudging" LTZ. As Mjankor already pointed out, any deduction based on the shutter speeds and f-stops used in these and other studio samples rests on the questionable assumption that the light level is controlled and held constant.

There are other and better ways to check whether two cameras actually got the same light on the sensor at the same camera ISO (checking the saturation of the RAW files and see whether they match what we'd expect based on the DxOMark "measured ISOs" if the cameras have been given the same effective exposure, i.e., the same amount of light on the sensor). I have performed this check for the E-M5 versus a number of other cameras (GH2, GH3, G3, D800) and in no case found anything but marginal deviations.

This subject has already been beaten to death in a large number of other threads and it is perfectly clear at this point that there is no "ISO fudging" going on.

Would agree with you genst normally, but have shot the EM5 and GH2 extensively, EM5 has slower shutter many times...

Not sure even what you mean here. Slower shutter on E-M5?

Yes...consistently slower...

Do you mean that 1/100 on the E-M5 is slower in practice on the E-M5 than the same shutter speed setting on the GH2? Or do you mean that the two cameras meter differently at the same camera ISO such that the E-M5 suggests a slower shutter speed at the same f-stop than the GH2?

GH2 consistently gave me better shutter speeds and sharper shots in trying conditions than the EM5 has...when the EM5 has enough Shutter Speed it of course excels by far to my eyes...

Sharper shots, perhaps. But I am sure you will find that if you check the meters under controlled conditions, they will meter identically within 1/3 EV.

And you are not seriously saying that Olympus is "fudging" the actual shutter (so that 1/100 actually is something significantly slower than 1/100), are you?

As to metering, I have tested the meter of my E-M5 against the meter of my G1 under carefully controlled conditions. The G1 meter suggests 1/3 EV less exposure than that of the E-M5. This difference is, I would say, within the limits of normal tolerances, and might be explained by the fact that the G1, unlike nearly all other cameras, has DxO "measured ISOs" that are a bit higher, not lower, than the camera ISOs. So it needs to keep exposure down slightly compared to other cameras to prevent highlight clipping.

Fuji does the same and it is equal to SLOW Shutter Speeds...X-E1 and X Pro 1 are similar to EM5 in this regard...

I do a consderable amount of birding and pretty consistent with tripod, settings etc...more blurred shots from EM5 than any other camera I have ever used...OIS on...OIS off...IBIS on...IBIS off...both on...both off...

Well, whether you get blurred shots is something completely different from "ISO fudging" isn't it? The E-M5 has problems with shutter shock (at least my copy does) with certain lenses, including the 100-300.

Shutter Shock is another culprit that could be the problem as well...agreed will investigate a little further into this...

You can pea on my leg...just don't try and tell me it's rain...lol...inconsistent lighting on ALL 5 cameras...

What would the inconsistency amount to?

None, there is no inconsistency in Image Resource lighting...

If there isn't, how do you explain the fact that the actual exposure difference between the E-M5 and the D5200 in the ISO 800 IR samples you pointed to is actually about 1/5 EV rather than the full one EV that the difference in shutter speed (1/80 versus 1/160) apparently has you believe.

then DxO using different lighting for each test?

DxO using different lighting for each test? Don't know what you are talking about. Noone said anything like that.

DxO has consistent lighting the same as Image Resource...is what I am saying...

Yes, I noticed that you said that. I just proved you wrong.

If it's DPR you have in mind, Andy Westlake has made it perfectly clear that they make no attempt to control the light level in the studio where they shoot their samples and that nothing whatsoever can be made out of the f-stop and shutter speed settings as far as actual exposure (amount of light on the sensor) is concerned.

I never use DPR samples much at all to be honest because of the front and back focusing issues that goes on at times...

...uhhumm...I call BS...

You call what BS?

Whenever you shoot a Nex-7 at same ISO and the shutter speed is double that of the EM5...thats BS...should be by some amount, but not double?

Tell you what I'll do when I get to the U.S. Anders I'll do some testing with EM5 vs Nex-7 vs G3 and compare, BUT I have never went out with any GH2 or G3 or Nex-7 or FZ200 and not came back with out some keepers that are not blurred...the EM5 was the first for me, not one keeper out of 200+ shots all blurred due to low shutter speed...

Feel free to do the testing. Noone has so far reported anything seriously deviant about the E-M5 meter in controlled testing as far as I am aware. My own check against the G1 is just one example.

Shutter Slap?...so your thinking thats what is causing the blurred EM5 shots?

My E-M5 has shutter shock issues between 1/20 and 1/200 (approximately) with the 100-300 as well as other longer lenses (40-150, 45-200, 75/1.8) and I have reasons to think that I have tested this more carefully than just about anyone else on this forum. For the 100-300, you need at least 1/250, preferably 1/320 regardless of whether you use IBIS or OIS. With the 100-300 at 300, the impact of the shock is clearly visible even when shooting from a pretty good tripod with long anti-shock enabled.

I put it down to IBIS and my technique first round...we shall see soon I'll shoot them all side x side birding and compare shutter speed, ISO, and F-Stops...

I don't think IBIS is causing the problem. It's just that it can't correct for the shutter shock, presumably because the speed/frequencies involved are far higher than those of human handshake. OIS can't either. The only lens where I have found a difference between IBIS and OIS when it comes to the ability to counter the shutter shock is with the 14-45. In this case, OIS is preferable on that ground.

Getting a lot less keepers with EM5 than ever before...but still learning...

-- hide signature --

--Really there is a God...and He loves you..
FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus OM-D E-M5 Olympus E-M1 Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +21 more
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