D4S versus D4 Photograpgic Dynamic Range (PDR)

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bclaff
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D4S versus D4 Photograpgic Dynamic Range (PDR)
9 months ago

I have enough data on the D4S to make PDR measurements but I'm waiting for a cleaner set of data before posting results to my site. (For those who aren't familiar with PDR it's a measurement I make that is quite similar to DxoMark Landscape DR.)

It looks like the D4S NEF files do not have any more dynamic range than the D4; in fact low ISO PDR might be slightly less.

This would seem to contradict anecdotal reports of greatly improved high ISO images.

Since the D4S has the newer Expeed 4 processor and improved signal processing I would not be surprised if JPG files look much better than the D4, particularly at high ISO; and that is significant to those who don't post process every raw file themselves.

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