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Old Feb 24, 2005, 9:33 AM   #1
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Can I use the Olympus FL-40 flash with the Canon 20D camera Ive ordered. I would be sad to see the flash being sold since it cost alot of money, but I do need a good flash in automode for my new Canon 20D camera. Will the Canon camera be able to controll it in auto mode?
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Old Feb 24, 2005, 10:17 AM   #2
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No. this is due to3 factors

1- the pins probably do not line up on the base connectionfor the camera/strobe to communicate

2- due to design differences internally (metering structure and or communications and firmware) again above a manual triggering they really don't like each other.

3- propriatary operation (which is really covered by the first 2 statements
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Old Feb 25, 2005, 7:06 AM   #3
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I use the flash on my 10D dont know about the 20
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Old Feb 25, 2005, 7:55 AM   #4
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I won't try to hijack this thread but I have a similar quandry regarding the Vivitar Auto Thyristor 3700 flash. I've had it close to 20 years I suppose and previously used it with a Minolta X-700 35mm camera. Can it be used in any way with the 20D...slave maybe? I haven't done a lot of remote flash stuff in years but would like to start again and maybe the Vivitar can be used in some way, any way???

Thanks, TG
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Old Feb 25, 2005, 3:16 PM   #5
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If the only pins on the bottom of the flash is a single centered pin, you can, but only in full manual mode "M" since the flash is manual, has no communication between the camera and flash other than when to fire. For example on my Vivitar 283, it has a little dial on the side ( and the thyrister on the front ) the dial on the site you swing it to the ISO of the camera, then above it tells you the appropiate color/setting for the thyrister and the aperture setting for the camera. The Shutter speed is whatever your camera's flash sync speed is ( typically 1/200 for the manual type of flashes ).
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