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From: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Newsgroups: comp.sys.dec
Subject: Re: Movies from a Decstation 5000
Message-ID: <1991Mar5.143927.28897@news.larc.nasa.gov>
Date: 5 Mar 91 14:39:27 GMT
References: <1991Mar5.005311.176@csc.canterbury.ac.nz> <1991Mar04.193544.25474@eecs.wsu.edu>
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Reply-To: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
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Organization: NASA Langley Research Center
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In article <1991Mar04.193544.25474@eecs.wsu.edu> yeidel@wsuvm1.csc.wsu.edu (Joshua Yeidel) writes:
>phys009@csc.canterbury.ac.nz writes:
>>Has anyone out there tried to attach a frame grabber in order to produce
>movies
>>from one of these. Is anyone in a position to tell me what hardware I might
>>need, and how  to go about it?
>I presume from your mention of a frame-grabber that you are thinking in terms
>of video when you say "movies".  You may want to think about film as well.  

   I am currently doing animation with pv-wave, using a Bolex H-16 camera.
I've put a Kern-Switar flatfield lens on the beast, pointed it at the CRT,
turned out the lights.  I've got a shutter release cable taped to a solenoid
from an old washing machine, which is controlled from the serial port of
the '5000.  Whenever any character is sent out the port, the shutter fires.
Because the Bolex has an adjustable shutter angle, there is less of a problem
with flicker, although I suspect that with the camera in single-frame mode
at 16 fps, the standard shutter angle would do.  (This would be an effective
exposure of about 1/35 sec, right?).

   In any case, the camera resolution is a lot higher than that of the
DS5000/200PX that we are using for display, even using the crappy 7239 film
that the stockroom here carries.  I heartily recommend film for animation.
--scott