Jon the flash has to be more than just Canon AF fit for the Canon DSLR cameras. This is why your manual states the models of speedlite that work correctly. Basically the flash must support E-TTL. Some of the newer compatible flashes do support this and will work OK. Unfortunalty I think the 350D does not have a PC connector like the 20D does so that you could trigger an old flash gun at full power.
Last edited by robski; 12-01-06 at 13:55.
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