nazdravanul
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 Re: Nikon/Canon/Sony Image Quality SUCKS vs Panasonic's Multi-Shot High-Res Mode | |
hiepphotog wrote:
nazdravanul wrote:
A few more valid points from the same controversial (on this forum) reviewer:
1 Sony's files for pixelshift: 1 photo = 16 shots X cca 120 MB / shot = 1.9 GB. Or, alternatively, compressed raw would be 1 photo = 16 shots X 60 MB / shot = 960 MB. Wow! I could fill up my 256 GB card in a few hours of shooting. I would need new superfast hardrives, asap.
By comparison, Panasonic s1rs 8 file multishot = 1 x 324 MB raw file. That's 1/3 the size
2. The 8 shot vs 16 shot, even if superfast executed, still makes the 16 shot AT LEAST 2 times more vulnerable to subject movement (changes in light, wind etc.)
3 The inability to preview DOF and critical focus, on the final shot, for the Sony, in the field (because the multishot file needs a computer to be seen) will have critical implications, far from trivial, given the completely different CoC
I can only add that 4. focus stacking is out of the question as it only compounds the problem, exponentially. Tilt / swing becomes mandatory, not optional.
Hmm, while excited about the Sony, and determined to make it work, the PRACTICAL, real world implications of the multishot implementation are no longer theoretical, but utterly painful. Real world usage may be severely impaired in Sony's a7r4 implementation.
While I know that talking about a camera without using it makes a lot of points utterly mute, I believe these 4 problems will be perfectly valid, with the camera in hand.
What are your thoughts ?
As reported so far, Panasonic magnification isn't so good at high mag. so it will be harder to determine the right DOF and critical focus. And I'm not sure why DOF and critical focus can't be achieved on the Sony. The Hi-res version will still have the same DOF and critical focus as the lower res. .
No, it will not, What is sharp at 61MP will not be equally sharp at 200MP. 100% magnification on the high rez image is a completely different beast than on the standard one.
While on Panasonic “magnification at high rez isn’t so good” on the Sony is non-existant. There is no high rez image, in camera. You are basically judging the sharpness of an equivalent 40MP photo based on a 10MP preview. It’s checkong focus at precisely 25% magnification. Can you check proper DOF and critical focus at 25% ? Of course not.
Not to mention that, because you don’t have the assembled, final image, in the field you have no idea, on the Sony, if you really have the shot. Is checkerboarding present or other bad artifacts from subject movement or subtle lighting changes ? We don’t know, until we reach a desktop PC capable of assembling min 1GB of data into a final image.
I may prefer a 187 MP image that I can actually control, in the field, on location, to a 240 MP image that I cannot.
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