home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!olivea!spool.mu.edu!uwm.edu!daffy!uwvax!zazen!doug.cae.wisc.edu!kolstad
- From: kolstad@cae.wisc.edu (Joel Kolstad)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A1200/4000 ramblings...
- Message-ID: <1992Dec22.183843.14065@doug.cae.wisc.edu>
- Date: 23 Dec 92 00:38:43 GMT
- References: <37972@cbmvax.commodore.com> <bmccnnll.725047559@unix1.tcd.ie> <smcgerty.725068311@unix1.tcd.ie>
- Organization: U of Wisconsin-Madison College of Engineering
- Lines: 20
-
- In article <smcgerty.725068311@unix1.tcd.ie> smcgerty@unix1.tcd.ie (Stephen John McGerty) writes:
- >
- >Ever sat in the front row of a cinema? The flicker is _really_ bad.
- >I hear it's 24 fps, or something silly like that...
-
- Technology has improved in the past 50 years. :-)
-
- Although films are still often shot at 24 fps, each frame is flashed
- _twice_, giving a 48 Hz flash rate. Most people's eyes don't notice this
- -- especially considering that there usually isn't the very sharp constrast
- between adjacent picture portions that you find on computer screens.
-
- I believe that you need to flash things at people about 40 times a second
- (given low constrast images, like movies) if you don't want them to notice
- flicker. You only need to actually shift images something like 15 times a
- second and people won't perceive it as "jerky" motion.
-
- These numbers can vary a lot of what's being displayed, though.
-
- ---Joel Kolstad
-