Why 'more or less stopped using ISO'?

Started Feb 19, 2014 | Questions thread
Shop cameras & lenses ▾
crames Regular Member • Posts: 192
Re: Maybe this will help.

Only if you know how to convert to XYZ, where Y is luminance. CIE states that brightness is relative luminance. Relative luminance is defined as photometric luminance normalized to 0..100 in such a way that reference white is 100.

No, Brightness is an absolute percept, not relative. Relative Brightness is called Lightness.

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