DVL-Digest 678 - Postings: Index Film FPS Film FPS - "Perry" There are actually two completely separate processes going on with the conjuring trick that is video or film movies: 1) You need to flash the pictures fast enough so we lose the flicker and appear to see a continuous image. This rate will vary widely dependent on the subject and his/her condition, the environment and the object (movie) being shown. In a movie theatre environment it is thought to be in the mid '40 FPS for most folk, so a two bladed shutter giving 48 'flashes' per second is sufficient. In the situation of a computer workstation, as much as 100 FPS may be needed. 2) If you move the picture from frame to frame, a slower frame rate than the flicker rate will appear to give continuous motion, but only for relatively small movements. 24 FPS is sufficient for much motion, but large and steady motion such as camera pans give rise to 'judder' which some folk (like me) hate more than others. Perry Mitchell Video Facilities http://www.perrybits.co.uk/ (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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