Is my thinking about equivalence right?

Started 3 months ago | Questions thread
RobBobW Contributing Member • Posts: 956
Re: Is my thinking about equivalence right?

bobn2 wrote:

RobBobW wrote:

What I meant by “it is a wash” is that more light is required to illuminate a full frame sensor to the desired light intensity. The only relevance of total light is in obtaining the desired intensity.

The 'desired intensity' is set by your requirements for image quality (noise), and for any given requirement will be different full-frame and mFT.

Actually, I was thinking about 'desired intensity' referring to the exposure to give a good Zone system type of overall tonal range.  No ETTR or stuff like that.  My film days are showing!

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