Is my thinking about equivalence right?

Started 3 months ago | Questions thread
Iliah Borg Forum Pro • Posts: 28,685
Re: Is my thinking about equivalence right?

Mark Ransom wrote:

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.

Lens transmission is automatically compensated by using through-the-lens metering so nobody gives it a second thought.

If metering and shooting apertures are the same, yes

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