Is my thinking about equivalence right?

Started 3 months ago | Questions thread
bobn2
bobn2 Forum Pro • Posts: 69,811
Re: Is my thinking about equivalence right?
6

Muster Mark wrote:

All very good info! My point was just to demonstrate the kind of analysis you need to do to actually compare total light of an exposure and why the equivalence formula (pupil area x sensor area) doesn't actually work in practice.

In practice, it works just as well and no better that exposure. When you calculate exposure, you also don't generally take account of factors such as vignetting and lens transmission.

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