oldfogey

oldfogey

Lives in United States Toronto Ontario Canada, United States
Works as a Professor
Joined on Apr 2, 2008

Comments

Total: 68, showing: 1 – 20
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Look at this old thread from Nov 2009:

http://www.dpreview.com/forums/post/33747025

Direct link | Posted on Dec 5, 2014 at 18:43 UTC as 27th comment
In reply to:

oldfogey: Please Note: My DPR Nov. 2009 suggestion to Olympus - Now I hope they look me up and at least offer me a free body for making the suggestion!

"An Ultraresolution Consumer grade SLR from Olympus?
Nov 19, 2009

Now Hasseblad have done it - offered an ultraresolution camera which combines 4 images shifted by 1 pixel to generate full colour resolution matching the sensor resolution. The only drawback is the need to keep the camera and subject completely motionless during the process. Clearly Olympus (and Pentax/Sony) have to make a response - they already have sensor shift image stabilization - all (?) that is needed is new firmware to enable a similar mode of operation in their consumer grade cameras - and why stop with full pixel shifts - why not 1/2 pixel shifts? Providing a lense with the needed resolution is mounted and a sufficiently stable tripod is used we could see the introduction of a practical under $1k 40mp landscape/still life camera."

Handholding already works if you are prepared to spend the time and use the "Photoacute" software package. As I pointed out on a Hasselblad thread - more than 4 images are needed for best results and you need a good lens, accurate focus, and no subject movement - also foreground objects get a bite messy because of the inevitable small camera shift between exposures.

Direct link | Posted on Dec 5, 2014 at 06:19 UTC
On Icefog at dawn in the Panoramic photos I day time challenge (2 comments in total)
In reply to:

autochrome: Nice shot. Where is this?

thanks for the comment. It is Edmonton, Alberta Canada. This is only part of a larger Pano which I very much like as a print but it is too long and narrow to be effective on a computer screen. The big white building in the centre is a bit of a blot - it was an old power station which has now been demolished.

Direct link | Posted on Dec 5, 2014 at 06:08 UTC

Please Note: My DPR Nov. 2009 suggestion to Olympus - Now I hope they look me up and at least offer me a free body for making the suggestion!

"An Ultraresolution Consumer grade SLR from Olympus?
Nov 19, 2009

Now Hasseblad have done it - offered an ultraresolution camera which combines 4 images shifted by 1 pixel to generate full colour resolution matching the sensor resolution. The only drawback is the need to keep the camera and subject completely motionless during the process. Clearly Olympus (and Pentax/Sony) have to make a response - they already have sensor shift image stabilization - all (?) that is needed is new firmware to enable a similar mode of operation in their consumer grade cameras - and why stop with full pixel shifts - why not 1/2 pixel shifts? Providing a lense with the needed resolution is mounted and a sufficiently stable tripod is used we could see the introduction of a practical under $1k 40mp landscape/still life camera."

Direct link | Posted on Dec 4, 2014 at 23:17 UTC as 81st comment | 4 replies
On Synchro Diving in the Monopod Challenge challenge (3 comments in total)
In reply to:

oldfogey: Why, when using a shutter opening of less than about 1/30'th of a second would anyone use a monopod (or tripod) when the image stabilization systems available on most modern cameras would do as good or better job? This challenge seems to rely a bit too much on the honesty of the entrants since there is nothing in the EXIF file to say whether an external device was used to stabilize the camera - and for most of the 5 entries so far - there was no obvious need.

OK - point taken - but a 50mm at f11?

Direct link | Posted on Dec 2, 2014 at 17:14 UTC
On Canon EOS 7D Mark II First Impressions Review preview (2702 comments in total)

A 1/2 stop (EV) difference in sensor response among the different APSC sensors is quite significant - given the difference in cost between lenses with a 1/2 stop difference in brightness but with otherwise similar resolving power. The new speed/image quality queen of the APSC set seems to be the NX1 although the D7100 is very close. Clearly the next big revolution in larger sensors is going to be the maturation of BSI designs. Although AF speed/accuracy/reliability also matters and Canon may have an advantage here - or maybe not. Clearly given the variety of AF implementations out there tests of AF are going to continue to be very subjective.

Direct link | Posted on Dec 1, 2014 at 23:47 UTC as 29th comment | 2 replies
On Synchro Diving in the Monopod Challenge challenge (3 comments in total)

Why, when using a shutter opening of less than about 1/30'th of a second would anyone use a monopod (or tripod) when the image stabilization systems available on most modern cameras would do as good or better job? This challenge seems to rely a bit too much on the honesty of the entrants since there is nothing in the EXIF file to say whether an external device was used to stabilize the camera - and for most of the 5 entries so far - there was no obvious need.

Direct link | Posted on Dec 1, 2014 at 23:15 UTC as 1st comment | 2 replies
On Hasselblad unveils pixel-shifting 200MP H5D-200c MS article (230 comments in total)

I'm rather surprised that no-one has mentioned the "Photoacute" software package that does essentially the same thing with a series of files taken by any digital camera. Their trick works and the package is not very expensive. Processing is a bit slow - and requires more than 4 images for best results. You can try it without having to buy the package - but the images cannot be saved without a disfiguring watermark.
What matters most are the quality of the lens, accuracy of focus and having a static subject. Since there is no point in trying to make super-resolution images when any of these factors is lacking having the option built into the camera at enormous extra expense doesn't really make a lot of sense. Since a basic 16-25Mp image is more than sufficient at almost all ordinary print sizes the need for such acuity doesn't arise very often.

Direct link | Posted on Aug 27, 2014 at 01:51 UTC as 3rd comment
On Panasonic Lumix DMC-FZ1000 Review preview (754 comments in total)
In reply to:

oldfogey: Either I'm blind or DPR has missed the most significant advance that this camera represents. The high ISO RAW files from the FZ-1000 are almost as good as the best m4/3 cameras, are significantly better than those of the Sony RX-10 and are dramatically better than those of the Nikon V3. If this really is the same 1" sensor that Sony put into the RX-10, Panasonic know something about signal processing that Sony/Nikon did not.
DPR's also claims that the Sony lens is sharper than the Panasonic's. If so the test images shot with the Sony must be a bit out of focus.

Look at the portrait of the bearded gentleman. Chroma Noise destroys all detail in the V3 image whereas there is very low chroma noise in the FZ1000 image. Although chroma noise is relatively easy to reduce there is always a loss of detail. There is still significant hair texture any eye detail in the FZ1000 image. The Sony is somewhere in between.

Direct link | Posted on Jul 24, 2014 at 01:22 UTC
On Panasonic Lumix DMC-FZ1000 Review preview (754 comments in total)
In reply to:

oldfogey: So DPR - apart from the lens comparison and RAW image dynamic range questions frequently noted below.- How much video 4K or 1080P can the FZ1000 record on a single battery charge? Does the sensor overheat when long video clips are recorded? What are the filesizes/min? And How well does the IS system work?
By the way how can any lens based IS system do "5 axis" - i.e. (especially) correct roll? And what about flash - is the wireless control the same as Olympus's or would one have to invest in a different system?

jkoch2 has the "Right Attitude" while "Prince-cody" is clearly a fanboy. If you have ever been stuck having to change batteries while trying to record a presentation with the camera on a tripod you would know what a serious issue battery life can become. Unfortunately manufacturers don't often provide this sort of information although it can be vital - and the "try it for yourself" approach really would make the effort spent reading reviews pointless. My question about "roll" correction is one that doesn't seem to have come up in discussions of image stabilization - but it is one area in which IBIS systems may have a definite advantage over optical stabilization.

Direct link | Posted on Jul 23, 2014 at 22:12 UTC
On Panasonic Lumix DMC-FZ1000 Review preview (754 comments in total)

So DPR - apart from the lens comparison and RAW image dynamic range questions frequently noted below.- How much video 4K or 1080P can the FZ1000 record on a single battery charge? Does the sensor overheat when long video clips are recorded? What are the filesizes/min? And How well does the IS system work?
By the way how can any lens based IS system do "5 axis" - i.e. (especially) correct roll? And what about flash - is the wireless control the same as Olympus's or would one have to invest in a different system?

Direct link | Posted on Jul 22, 2014 at 23:42 UTC as 138th comment | 6 replies
On Panasonic Lumix DMC-FZ1000 Review preview (754 comments in total)
In reply to:

oldfogey: Either I'm blind or DPR has missed the most significant advance that this camera represents. The high ISO RAW files from the FZ-1000 are almost as good as the best m4/3 cameras, are significantly better than those of the Sony RX-10 and are dramatically better than those of the Nikon V3. If this really is the same 1" sensor that Sony put into the RX-10, Panasonic know something about signal processing that Sony/Nikon did not.
DPR's also claims that the Sony lens is sharper than the Panasonic's. If so the test images shot with the Sony must be a bit out of focus.

Reply to Quapat below. I was looking at the ISO 12800 comparison where the FZ1000 does seem to hold the edge. Funny how the results seem to vary over a 1 stop window.

http://www.dpreview.com/reviews/image-comparison?attr18=daylight&attr13_0=panasonic_dmcfz1000&attr13_1=sony_dscrx10&attr13_2=nikon_v3&attr13_3=sony_a6000&attr15_0=raw&attr15_1=raw&attr15_2=raw&attr15_3=raw&attr16_0=12800&attr16_1=12800&attr16_2=12800&attr16_3=12800&normalization=full&widget=1&x=0.028651623147983734&y=-0.16726480458854828

Direct link | Posted on Jul 22, 2014 at 17:00 UTC
On Panasonic Lumix DMC-FZ1000 Review preview (754 comments in total)

Either I'm blind or DPR has missed the most significant advance that this camera represents. The high ISO RAW files from the FZ-1000 are almost as good as the best m4/3 cameras, are significantly better than those of the Sony RX-10 and are dramatically better than those of the Nikon V3. If this really is the same 1" sensor that Sony put into the RX-10, Panasonic know something about signal processing that Sony/Nikon did not.
DPR's also claims that the Sony lens is sharper than the Panasonic's. If so the test images shot with the Sony must be a bit out of focus.

Direct link | Posted on Jul 22, 2014 at 05:48 UTC as 197th comment | 7 replies
On Panasonic Lumix DMC-FZ1000 First Impressions Review preview (1267 comments in total)
In reply to:

peevee1: DPR wrote: "The first thing you'll notice here is that a) the Cyber-shot DSC-RX10 is noticeably sharper"

Huh? Check out the brick building near the bottom right corner, and a yellow structure near it. There is no question about which one is sharper - of course it is Panasonic. There is not difference in the center, but FZ1000 clearly wins in the corners, at least at wide end.

Also check the foliage - the Panasonic is much better in the off central areas of the 25mm image, the Sony 24 mm is a fuzzy mess.

Direct link | Posted on Jul 1, 2014 at 21:15 UTC
On Budget M43: Kodak Pixpro S-1 First Impressions Review article (137 comments in total)
In reply to:

Mike FL: Per DPR, S1 has "...extensive use of plastics in their construction, including the mounts...".

Metal body but plastic mounts. now we know why Kodak went out of the business yeas ago...

The 40-150 m.Zuiko is sold as part of a 2 lens kits with the e-pm2 and e-pl5. My copy of this lens is significantly sharper than my copy of the Panasonic 40-150 f4-5.6 - or either of my Zuiko 40-150 4/3 lenses. In my experience of 4/3 lenses with plastic parts there have been no issues that relate to the use of plastics. My only concern would be that after many-many lens changes the flanges might wear slightly so that the lenses would not sit as tightly in the bayonet but thus far it has not happened. Obviously they might not survive a severe sideways blow as well as a metal flange - but I would rather have the lens break off the camera than have the whole camera destroyed.

Direct link | Posted on Jun 26, 2014 at 01:04 UTC
On A GoPro Hero's journey into a dishwasher article (167 comments in total)
In reply to:

cseiler: Strangely familiar, what other movies do you watch with the same movements over and over again and you constantly hit the fast forward button?

Looks like you were the only one who "Got It". Very "organismic" - especially at the beginning of the wash cycle.

Direct link | Posted on Jun 5, 2014 at 17:16 UTC

Correctinator.

Direct link | Posted on Apr 2, 2014 at 22:26 UTC as 13th comment
On Viewing Autumn in the My own Imaginary world challenge (4 comments in total)

Re: Mirrorless Crusader - Whoever voted 5 for this one - is a disgrace for hyping this unimaginative junk. It really is all in the eyes of the viewer.

Direct link | Posted on Nov 23, 2013 at 10:35 UTC as 2nd comment
On My own Imaginary world challenge (6 comments in total)

Congratulations to all you artists out there. Many of the contributions - even the "lower ranked" ones have a wonderful creative flare!

Direct link | Posted on Nov 23, 2013 at 10:32 UTC as 2nd comment
On pool_fun in the Those Lazy-Hazy-Crazy Days Of Summer challenge (15 comments in total)

A delightful image - but appalling Image Quality. This is a Photo site, not facebook! I really think it should have been DQ'd on the quality issue alone - if it really was taken with a Nikonos and not a phone in a plastic bag the scanning could have been done at higher quality.

Direct link | Posted on Nov 16, 2013 at 23:46 UTC as 5th comment
Total: 68, showing: 1 – 20
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