DOF and Cropping take 2

Started 6 months ago | Discussions thread
bobn2
Forum ProPosts: 29,252
Like?
Re: I shall spell it out for you.
In reply to awaldram, 6 months ago

awaldram wrote:

I don't really see at applicable to the point I'm making ... Sensors have normalized gain such that iso100 produces the same exposure across sensor sizes.

You have that back to front. An ISO rating does not 'produce' and exposure. An ISO rating maps an exposure to a given tonal value. You set that exposure you get the given tonal value, so ISO determines the exposure that you choose, not the other way round. As for the second point, once again, gain is no part of ISO, sensor read chains have all sorts of different gains, depending on how they have been designed. There is no standard setting of gain to go with an ISO.

-- hide signature --

Bob

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow