 Carl W. Warren |
flash for canon 20d ? I,m purchasing my first digital camera a canon 20d and would like to know if the off camera flash (quantaray qtb-7500a ) will work properly on the 20d ? I've been using it on my canon a2e and it works for that camera , also will all eos lens work on the 20d ? any help would be helpful as I don't want to damage the camera . overly cautious carl warren
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Jon Close |
I don't think so. I'm pretty sure the QDA-CAF module works only in traditional TTL flash exposure mode, metering off-the-film while the shutter is open. The EOS digital cameras like the 20D are not compatible with that system and require a flash that emulates E-TTL (pre-flash for metering before the shutter opens), or a simpler non-dedicated auto mode where the flash has its own metering sensor. You can cheaply change the base module to the QDA-C (~$14 + s&h). This will give you that non-dedicated auto mode, but it requires manually coordinating the ISO and lens aperture settings (ie. can be used in Av an M modes only). To get automatic flash in all exposure modes requires either a Canon EX-series speedlight (eg. 220EX, 430EX, ...), or similar E-TTL compatible such as Sigma EF 500 DG Super, Sunpak PZ40X II, several from Metz, etc.
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Carl W. Warren |
thanks for letting me know, time to go shopping for a flash. oh what about eos lens? for the camera ? carl
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Christopher A. Vedros |
Any EOS lens should work with the 20D. There have been some compatibility issues with some older Sigma brand lenses and newer Canon digitals, though.
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Carl W. Warren |
thanks chris have a great day carl
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