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From: prc@ERBE.SE (Robert Claeson)
Newsgroups: comp.graphics
Subject: Re: photographing computer screens
Message-ID: <333@maxim.ERBE.SE>
Date: 17 Nov 88 19:22:36 GMT
References: <8811042303.AA21505@dawn.steinmetz.GE.COM> <76649@sun.uucp> <2496@spray.CalComp.COM>
Organization: ERBE DATA AB
Lines: 21

In article <2496@spray.CalComp.COM>, anson@spray.CalComp.COM (Ed Anson) writes:

> In article <7896@bloom-beacon.MIT.EDU> tada@athena.mit.edu (Michael Zehr) writes:

> >I've been having difficulties photographing color images on a computer screen
> >and developing them.  I'm working with a color vaxstation, and using Kodak
> >kodachrome film.  What I see on the screen isn't being reproduced exactly
> >on the film.  Red looks orange, blue looks lighter, green looks yellowish.

> Also, make sure you're using a fairly fast film. Try for an exposure in the 
> range of 1/30 to 1/15 second. Longer exposures cause some reciprocity failure,
> which affects the different primaries differently.

Don't use an exposure time that's shorter than the refresh time of
the screen, or else you'll just get a partial screen on your slide.
I'd recommend 1/8th second. That's what I use with Kodak's Ektachrome
160 Professional.
-- 
Robert Claeson
ERBE DATA AB
rclaeson@ERBE.SE