Question about Canon Speedlite 420EX TTL Flash

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Speedlite 420EX Suspect Main Flash not Firing

I have a 420EX that appears to not be firing the main flash. It will charge up and you can fire the pre-flash manually on the flash and also on my Rebel XTI. My camera will not remember the pre-flash, which is marked with an asterick that is seen in the view finder. All other functions seem to work on this flash, including range adjustments. Is there a pin on the hot-shoe where the flash will send information back to the camera? I'm wondering if this could possibly be the problem. Any help would be much appreciated. Thanks, Richard

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SOURCE: I just Bought a Canon Speedlite 540EZ it will not

No. The rebel, or any digital canon camera requires the use of the EX or EX II series flashes.

Posted on Feb 28, 2010

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SOURCE: I need a manual for a Canon Speedlite 420EX in

You can get the user manual for this device from this link

Posted on Mar 02, 2010

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