Correct me if I'm wrong; my brain is having a weird morning:

Quote:
cropping a 48:32 image for a 48:27 screen, so you're losing 5/32

I believe that means you're losing 5/48, which is 10.42%

Quote:
cropping 3:2 for 4:3 is like cropping 9:6 to fit 8:6, so losing 1/9

Again, 1/6.

Quote:
cropping 4:3 to 16:9 is like cropping 16:12 to 16:9, losing 3/12

And 3/16.
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Bitt Faulk