Join Date: Apr 2000
Location: Ottawa, Ontario, Canada
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Good point about perceptual limits on resolution and contrast. Actually, while the dynamic range of the eye is enormous (10^8! like you say), we can only perceive a contrast ratio of about 100:1 in any given picture. Projectors need a larger contrast ratio than that because the picture shown on the screen often doesn't use the entire dynamic range of the projector. How much is enough? Possibly 1000:1 (full-on full-off) is, I'm sure there's some kind of SMPTE study out there on this.
Resolution-wise I think you're bang on, it's around 1/60 of a degree. That equates to some pretty large numbers, something like 2k*2k at one screen height away from the screen.