JochenIs

Joined on Jan 30, 2014

Comments

Total: 541, showing: 21 – 40
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On article Sigma shows EF-M mount primes for Canon cameras at WPPI (204 comments in total)
In reply to:

Flow Friday: „equivalent focal length“

Well, leaving aside the incorrectness of this phraseology, wouldn‘t it be much easier, talking in terms of ‚field of view‘?

Don't know much about history
Don't know much biology
Don't know much about a science book
Don't know much about the French I took
But I do know what field of view
And I know that if you understand it, too
What a wonderful world this would be...
(Sam Cooke)

What DejayRezme said.
I want to add that we need focal length because many lenses are not only used on one sensor size thus it doesn't have a single field of view. Focal length is always true no matter what your sensor size is. So a manufacturer has to put focal length as a designation because it is not determined on what sensor you gonna use the lens.

Link | Posted on Feb 29, 2020 at 22:28 UTC
In reply to:

Photo_AK: The difference in covering 20/1.8 announcements from Nikon on Feb. 12 and Sony today is just mind blowing.
To go even further, DPR starts their coverage with marking the lens as "near perfect" and ends with calling it "industry-leading."
This is just sad and unprofessional.

So it is class leading but you didn't test the others in the class...

Link | Posted on Feb 25, 2020 at 21:14 UTC
In reply to:

NotANumber: This proves again it is difficult to get good colors with Sony cameras.

@Hezu #15 has beautiful colors!

Link | Posted on Feb 17, 2020 at 15:54 UTC
In reply to:

Eugene A: A sensor's CFA is a physical arrangement of R/G/B colored filters per pixel, no? How do you rearrange them so that e.g. 9 Red filters come together for pixel binning?

Controlling exposure at pixel level - now that would have significant implications. Sony?

A guess could be that its simply to hard to make a color filter array for 108MP on such a small scale so they just make a 12MP color filter array instead.

Link | Posted on Feb 14, 2020 at 20:55 UTC
On article Canon unveils $400 RF 24-105mm F4-7.1 IS STM (508 comments in total)

Looks like the lightweight zoom i would use for landscapes. If subject separation or speed is needed you may add a prime for a very potent kit.

Link | Posted on Feb 13, 2020 at 13:38 UTC as 44th comment
In reply to:

Bigsensorisbest: Sadly, and I have several x series cameras, its completely the wrong format to make a shallow dof lens for, why wouldnt you use full frame or GFX to have s natural advantage if you have to have only a few millimetres of focus...

I think the convenience of a lightweigt zoom is a good reason to go aps-c. Another one is longer reach with a tele/macro lens. Then add this lens if you want thin DOF sometimes.

Its not only a few millimetres. 85mm f1.2 on fullframe has 1m DOF at 10m focus distance. There is applications for those lenses.

Link | Posted on Feb 6, 2020 at 16:53 UTC
On article Nikon D3500 review (413 comments in total)
In reply to:

mick232: 11-point autofocus system? Is this 1999?

@T3 there is millions of people buying smartphones with cameras with no af...

Link | Posted on Feb 2, 2020 at 17:55 UTC
In reply to:

tkbslc: I still don't know why tiny bezels are so bad. I prefer Samsung S9 style bezels vs a notch, punch out, or pop-up. Looks cleaner and you still have a little something to hold on to!

The reason we need 21:9 phones is that badly designed apps tend to fill the screen with big info/control panels so there is only little space left for the actual content on a 16:9 phone.

Link | Posted on Jan 29, 2020 at 20:32 UTC
In reply to:

amf1932: I'll keep my iPhone11 Pro.

I'll keep my old OnePlus phone :-)

Link | Posted on Jan 27, 2020 at 22:52 UTC
On article Why Leica's M10 Monochrom is more than just a gimmick (656 comments in total)
In reply to:

Rob890: I wish Fuji or Ricoh would make one of these. A monochrome GR would be really nice. A X100 camera would be interesting

How does a preview on the backscreen look with a converted camera? The software still does demosaicing right? The result would be a strange image.
As a bayer filter absorbs >1 stop of light is the metering off by that amount after conversion?

Link | Posted on Jan 19, 2020 at 20:12 UTC
In reply to:

Roland Karlsson: I think Canon is dishonest. In their text they stress the point that the counterfeit batteries might be inferior, even dangerous. But, that is not their real concern. Their real concern is that they take sales from Canon by pretending selling Canon batteries. And, I think, if they shall be honest, that is what they shall claim, and nothing else, when arguing for their case.

Then, of course, in their manuals they may warn against third party and counterfeit batteries how much they want.

You suggest that their real concern is not the quality and safety of the product but sales. Same applies to many warnings in manuals.

Link | Posted on Jan 19, 2020 at 18:42 UTC
In reply to:

Roland Karlsson: I think Canon is dishonest. In their text they stress the point that the counterfeit batteries might be inferior, even dangerous. But, that is not their real concern. Their real concern is that they take sales from Canon by pretending selling Canon batteries. And, I think, if they shall be honest, that is what they shall claim, and nothing else, when arguing for their case.

Then, of course, in their manuals they may warn against third party and counterfeit batteries how much they want.

"Then, of course, in their manuals they may warn against third party and counterfeit batteries how much they want."
I don't think throwing mud inside a manual is good behavior. They should warn only for known incompatibilities with third party products but if they just lie then the manual has no value to me and i have to research the information myself.

Link | Posted on Jan 19, 2020 at 13:43 UTC
In reply to:

AshleyMC: This case is about counterfeits that are fabricated to look like the real things with Canon logo and labels. Good for Canon. All manufacturers are entitled to take similar legal actions against any abuses their brands

At the same time, I continue to buy and use "third-party" compatible batteries. These have their own names. I have not had any issues in terms of capacity and performance in the last 10 years.

I bought a third party battery for my D700. It has more capacity than the Nikon one.

Link | Posted on Jan 18, 2020 at 16:03 UTC
In reply to:

istscott: If this technology does produce batteries 4x capacity with similar or better overall properties, I'd still have a hard time believing that camera companies would, in turn, put more capacity into their batteries, lol. They seem adamant about having a certain number of shots per charge for each tier of camera. Here's to hoping we'd at least see a moderate increase, but I'd expect they would just keep around the same capacity for more profit. At least Sony stepped things up by putting the NP-FZ100 into the A6600...

@Sirhawkeye
Third party batteries exist and sometimes they are better than OEM batteries. One should do some research before buying since there are dogs to.

Link | Posted on Jan 17, 2020 at 16:21 UTC
In reply to:

Mariano Pacifico: " ...capable of powering a smartphone for five full days of continuous use."

I have not continuously used my cellphone for 24 hours for five straight days without a wink nor meal nor water, has anyone ? Sure, my phone lasts 5 days in normal use.

@wasTF Iphone11 has 3100mAh and Nokia 3210 1200mAh. It would last about 3x as before.
Nokia 3210 can swap batteries and has more capacity than Iphone11 if you carry 2 spares.

Link | Posted on Jan 17, 2020 at 11:15 UTC
On article DPReview TV: Pentax DA* 11-18mm F2.8 lens review (151 comments in total)
In reply to:

BrexitDefCom3: When first I clicked on this item it was because I thought it was a Full-frame lens. It came as a VERY big shock to learn it costs as much as my 14-24mm Nikkor did new.
That lens IS a full-frame lens and this is a half-frame lens and should be half the price it is , as at this price it rivals Leica half-frame lens prices. They are charging new Sigma Art prices for a half-frame, sorry to go on and on....
It is only 17-27.5mm as well, which rather limits its use as a landscape or interior lens; and thats a shame, but happliy the old lens is still available if you want this wide on a half-frame sensor (plus it is much smaller and lighter)

A fullframe sensor is 1.5² = 2.25 times bigger than aps-c.
A fullframe sensor is about 2² = 4 times bigger than m43.
The cropfactror is a linear measurement while the sensor is an area.

Link | Posted on Jan 16, 2020 at 16:15 UTC
On article DPReview TV: Pentax DA* 11-18mm F2.8 lens review (151 comments in total)
In reply to:

panther fan: I know that this might be a bit controversial but DSLR ultra-wide-angle lenses are just not exciting anymore.

17-27mm F4 equivalent at 704g
You can get an FF 17-28mm F2.8 at 420g which is brighter, lighter and sharper and on top of that is 500$ cheaper.

I mean Full Frame DSLR ultrawides have a hard time creating excitement over all the amazing benefits of native mirrorless UWA designs and all their weight savings and sharpness advantages. Same goes for most smaller sensor mirrorless UWAs this day. But APS-C DSLR UWA? With the current state of body and lens prices I am sure most UWA shooters have probably at least adapted a different sensor format even in the Pentax system, if not gone mirrorless.

That is no fault of Pentax or this lens. But optics simply seem to favor larger sensors (and thereby longer focal lengths) and shorter flange distances if it comes to UWA design

I would put it this way: if you want the DOF and you want to handhold your camera then m43 is at an advantage in lowlight. This is because m43 has better IBIS and very efficient small sensors.
However, if you manage to use base ISO on fullframe there is no way m43 can achieve the same quality (ISO64/100 vs 400/800 equivalent which is 2-3 stops of noise). This is why i recommend a tripod for fullframe if you want maximum quality. Also you could use a faster lens if you don't need the DOF and fullframe will beat m43 this way too.
If image quality is most important go fullframe with a tripod. Go m43 for practicality and less weight

Link | Posted on Jan 16, 2020 at 01:16 UTC
On article DPReview TV: Pentax DA* 11-18mm F2.8 lens review (151 comments in total)
In reply to:

panther fan: I know that this might be a bit controversial but DSLR ultra-wide-angle lenses are just not exciting anymore.

17-27mm F4 equivalent at 704g
You can get an FF 17-28mm F2.8 at 420g which is brighter, lighter and sharper and on top of that is 500$ cheaper.

I mean Full Frame DSLR ultrawides have a hard time creating excitement over all the amazing benefits of native mirrorless UWA designs and all their weight savings and sharpness advantages. Same goes for most smaller sensor mirrorless UWAs this day. But APS-C DSLR UWA? With the current state of body and lens prices I am sure most UWA shooters have probably at least adapted a different sensor format even in the Pentax system, if not gone mirrorless.

That is no fault of Pentax or this lens. But optics simply seem to favor larger sensors (and thereby longer focal lengths) and shorter flange distances if it comes to UWA design

I was thinking most current fullframe cameras have base ISO 64/100 and most mft cameras ISO 100(?)/200 which is ISO 400/800 equivalent. But i know only some cameras.

Link | Posted on Jan 15, 2020 at 18:47 UTC
On article DPReview TV: Pentax DA* 11-18mm F2.8 lens review (151 comments in total)
In reply to:

panther fan: I know that this might be a bit controversial but DSLR ultra-wide-angle lenses are just not exciting anymore.

17-27mm F4 equivalent at 704g
You can get an FF 17-28mm F2.8 at 420g which is brighter, lighter and sharper and on top of that is 500$ cheaper.

I mean Full Frame DSLR ultrawides have a hard time creating excitement over all the amazing benefits of native mirrorless UWA designs and all their weight savings and sharpness advantages. Same goes for most smaller sensor mirrorless UWAs this day. But APS-C DSLR UWA? With the current state of body and lens prices I am sure most UWA shooters have probably at least adapted a different sensor format even in the Pentax system, if not gone mirrorless.

That is no fault of Pentax or this lens. But optics simply seem to favor larger sensors (and thereby longer focal lengths) and shorter flange distances if it comes to UWA design

@Auf Reisen
True, but only if both cameras have to use the same shutter speed. If you can take a long exposure on tripod or if there is simply enough light, both cameras can use base ISO but mft equivalent base ISO is 2 to 3.3 stops higher compared to fullframe and will thus produce about 2-3 stops more noise.

Link | Posted on Jan 15, 2020 at 17:58 UTC
In reply to:

Verto: The truth is Fuji made the public beta testers with all of their cameras until the XT3. I’ll never forget how awful the autofocus was on my Xpro2 when I got it. The “Kaizen” updates were just marketing terms for the firmware is no longer beta. Thank you for participating
.

Buying a camera with bad af is buyers fault you don't have to buy it. If you do buy it you should be happy they improved on the af performance via firmware updates.

Link | Posted on Jan 12, 2020 at 10:51 UTC
Total: 541, showing: 21 – 40
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