[ Post New Message | Post Reply to this One | Send Private Email to tim brown | Help ]

Response to High Resolution film

from tim brown (brownt@flash.net)
Consider midrange light at 500nm. At 1000 lpmm the line pairs are the same size as the light wavelength. So those films you list were tested with UV light. 720 lpmm is only possible with light of wavelength 694 nm or shorter. Even if the film and lens could resolve half that the wave nature of light would give a different "look" of sharpness than a larger image with less absolute resolution.
(posted 8646 days ago)

[ Previous | Next ]