snapsy Online Upload & Sell: On
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ohsnaphappy wrote:
From what I can tell, Snapsy is the smartest guy on this forum. So he's looking at graphs most of us don't know exist to make more sense out of the score. But I think that just ads to the whole problem that is DXO. A few months from now someone is going to tell you the D800 and D750 and D810 are all the same at 6400. Just based on what I've seen here the 750 is better than both and the 810 is better than the 800 at 6400. But DXO doesn't reflect that.
It's just frustrating because people tend to look at DXO like it's the Vatican of photography. Very few people are going to dig deeper. They're just going to see the score and come to the wrong conclusion.
What do you guys think?
Edit: DXO does this with lenses too. And you'll have some guy tell you the 58 or 85 1.4G is trash on an 800e. But both are actually stunning! But that's not what DXO suggests....Show more →
DxO's noise measurements are generally accurate and have been verified by independent posters on dpreview who perform their own analytic noise evaluation. The problem is DxO does only quantitative noise measurements, overlooking subjective and intermittent factors like banding, amp noise, and impulse noise (the ugly "salt and pepper" noise that affected prior generations of sensors like the 5DM1/5DM2). For the D750 it appears the amp noise common to previous FF Exmor sensors has been resolved, at least in the few samples I've seen - that makes a big difference in the subjective quality of images at ISO 6400 and above and is not accounted for in the DxO numbers. Also, as good as the D3s is it suffers from banding in deep shadows starting at around ISO 25,600.
As for DxO's lens tests and their perceptual MP stuff, it's a complete black box that nobody really understands (myself included).
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