Is my thinking about equivalence right?

Started 5 months ago | Questions thread
OP Muster Mark Contributing Member • Posts: 588
Re: This month’s very own equivalence thread

I completely understand and in retrospect should have

  1. kept the original post much smaller in scope and just talked about the result of my calculations regarding how vingetting affects total light falling on the sensor (which it is my understanding is what equiv. is all about). 
  2. posted this in the science and tech forum not here as it's not really about photography in anyway, just a critique of a math formula I often see used. 
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