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- Path: sparky!uunet!portal!cup.portal.com!Neon
- From: Neon@cup.portal.com (Anthony Joseph Bruder)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A1200/4000 ramblings...
- Message-ID: <72339@cup.portal.com>
- Date: Wed, 23 Dec 92 21:48:04 PST
- Organization: The Portal System (TM)
- References: <37972@cbmvax.commodore.com> <bmccnnll.725047559@unix1.tcd.ie>
- <smcgerty.725068311@unix1.tcd.ie>
- <1992Dec22.183843.14065@doug.cae.wisc.edu>
- Lines: 28
-
- In article 12/22/92 kolstad@cae.wisc.edu (Joel Kolstad) writes:
-
-
- >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.
-
-
- I thought that the old silents were shot at 24 fps and that around the time
- of the introduction of "talkies", 30 fps became standard. Which is why
- those of us who grew up in my generation were treated to silent pictures
- that seemed wierd. Everyone moved around the screen so fast. It wasn't
- till I was a little older, when more respect was granted to these old
- films, that I began to see silent movies projected at their correct speed.
- Some of those films, restored and with good prints are wonders to behold.
- (Flicker and all)
-
- Tony Bruder - neon@cup.portal.com
-