Is my thinking about equivalence right?

Started 3 months ago | Questions thread
OP Muster Mark Contributing Member • Posts: 588
Re: Is my thinking about equivalence right?

bobn2 wrote:

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.

This is a really good point. Not sure why it didn't occur to me sooner, but yeah, kind of defeats the whole point of my post. Thanks for this! I don't think 90% of the people who commented actually read what I wrote and just wanted to give their 2 cents about equivalence. So thank you!

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