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p.1 #7 · p.1 #7 · D850's 20+ mpx DX option vs its 46 mpx file, cropped to DX. | |
Hard to say if it will be identical or not. We know that the ISO range is different, so the sensor may be tweaked for better low ISO performance (and I would expect a cropped shot at ISO 64 to beat a D500 shot at ISO 100 regardless). But with a lower high ISO cap it's possible that the D850 will start to fall apart faster and the D500 might have a slight edge.
Also, larger sensors tend to generate more heat and other random interference, so that may slightly reduce performance on a per-pixel level. We can see this when comparing the 5DSR vs the 7DII - despite having the same pixel pitch, the 7DII has a slight edge over cropped 5DSR images.
Then again, Nikon will have had some time to improve their tech, so maybe they can equal the D500 with cropped D850 files. I wouldn't expect it at all ISOs though, I think the D500 will probably still win at ISO 12800 and up, maybe even sooner.
But regardless, I doubt the difference will really be noticeable at any ISO.
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