Path: utzoo!attcan!uunet!deimos!ux1.cso.uiuc.edu!jsivier
From: jsivier@ux1.cso.uiuc.edu (Jonathon Sivier )
Newsgroups: comp.misc
Subject: Re: photo of crt
Keywords: photo, crt
Message-ID: <1990Feb22.175729.12393@ux1.cso.uiuc.edu>
Date: 22 Feb 90 17:57:29 GMT
References: <146@tslwat.UUCP>
Organization: University of Illinois at Urbana
Lines: 21

In article <146@tslwat.UUCP> louk@tslwat.UUCP (Lou Kates) writes:
>Does anyone have any experience in taking photos of what is on a CRT screen?
>What lighting, if any, should be used, what f stop, what shutter speed?  I
>am using a 35 mm camera.

    I have done this many time and gotten very good results.  Make sure you
take the picture in a darkened room so you don't get any glare off the glass
front of the CRT.  Use a tripod and a shutter speed of at least 4 times the
refresh rate of the monitor (i.e. if the monitor is 60 Hz your shutter speed
should be a minimum of 1/15 sec.).  This is to reduce the effect of the black
banding you would get at a higher shutter speed.  In general the longer the
exposure the better.  Take your exposure reading directly off the screen with
no other light sources and I would recommend bracketing your exposure, take
several shots with some above the "correct" exposure and some below.  For
example if the correct exposure was f4 at 1/4 second take three shots, one at
this setting and one each at a half a stop over- and underexposed.

Good Luck.

Jonathan Sivier
jsivier@ux1.cso.uiuc.edu