Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!uflorida!ukma!cwjcc!tut.cis.ohio-state.edu!bloom-beacon!athena.mit.edu!tada
From: tada@athena.mit.edu (Michael Zehr)
Newsgroups: comp.graphics
Subject: photographing computer screens
Summary: color balancing
Message-ID: <7896@bloom-beacon.MIT.EDU>
Date: 11 Nov 88 19:31:32 GMT
References: <8811042303.AA21505@dawn.steinmetz.GE.COM> <76649@sun.uucp> <2663@pixar.UUCP>
Sender: daemon@bloom-beacon.MIT.EDU
Reply-To: tada@athena.mit.edu (Michael Zehr)
Organization: Massachusetts Institute of Technology
Lines: 21

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.

I've tried talking to photo stores and developers, and so far none of them has
been able to help, but i figure someone reading this has tried to take 
color photos from a screen before.

I'm not certain yet what the source of the problem is.  I know that what the
eye sees as a color is a combination of the actual hue, which is probably
composed of several spectral lines from the phosphor.  The fact that it's
blinking at 50 or 60hz also changes what you see.  

Some of the photo places have pointed out that the automatic color balancing
by the machine developers may throw the color off as well.

Does anyone have any suggestions about what to do?  Any help would be
greatly appreciated.  Thanks in advance.

-michael j zehr