Why 'more or less stopped using ISO'?

Started Feb 19, 2014 | Questions thread
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bobn2
bobn2 Forum Pro • Posts: 43,153
Re: Maybe this will help.

crames wrote:

bobn2 wrote:

If 'brightness' is dependent on 'absolute luminance of the stimulus' then there is no such thing as 'ISO'.

Ok, I'll bite. How so?

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Bob

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