Image resolution potential decreases with ISO increase?

Started 1 week ago | Questions thread
ForumParentFirstPrevious
Flat view
SKersting66
SKersting66 Contributing Member • Posts: 815
Image resolution potential decreases with ISO increase?

I'm pretty sure the answer is yes.
It only makes sense that if the dynamic range (DR) is reduced due to an inability to discern a discrete tonal value, because it is lost to noise (as exposure is reduced and ISO is increased); then there is a simultaneous and equal inability to discern the detail that tonal value would represent.
But is there some way to directly quantify this loss? For instance, using real numbers for the D810, which has a max PDR of 11.6 stops at base ISO 64 and a PDR of 10.2 stops at ISO200. Is it basically correct to say the 1.4EV loss equates to (very nearly) 10% of the total, and therefore the max resolution capability of the 36MP sensor is reduced by that same 10% (3.6MP)?
I do realize there are other factors that play into this... AA filters, lens resolution, etc.; I'm asking only in terms of the sensor itself.

ANSWER:
This question has not been answered yet.
Nikon D810
If you believe there are incorrect tags, please send us this post using our feedback form.
ForumParentFirstPrevious
Flat view
Post (hide subjects) Posted by
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow