Thank you, Malcolm. I did notice a slight tendency in this direction on my EOS 3. It must be something like this because of the inconsistency of the problem. I can put two or three flashes together and the problem pretty much goes away.
Believe it or not, I have a little less trouble with a Sigma 500 Super than with the 550 EX. This is all sort of new for me because I have had flawless flash work with Contax, Pentax and Hasselblad. Obviously, I am doing something wrong. I will concentrate on your suggestions. Anyway, back to the old drawing board for me. Jack Casner -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Malcolm Stewart Sent: Tuesday, October 15, 2002 6:35 PM To: [EMAIL PROTECTED] Subject: Re: EOS AF assist light Hi Jack Any chance that you're getting specular reflections from the 550EX's pre-flash? I did some tests with my EOS3 of slightly shiny material and with the 550EX on camera or near to camera axis, I got under-exposure. With the 550EX shooting into a brolly I got very much nicer results and the exposure was more or less spot on. (Nothing else was changed between shots.) I used an ST-E2 to fire the 550EXs. Viewing the slides under a microscope showed the specular reflections quite clearly. (I'm assuming that the D60 and the EOS3 measure the pre-flash in the same way - using the sensors reading off the viewfinder screen.) In the past, others have suggested using FEL and pegging the flash exposure on a known tone. Great advice for static shots but hardly practical for normal use. Malcolm Milton Keynes, UK * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
