Question about Canon Speedlite 540EZ TTL Flash
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Posted on Jan 02, 2017
SOURCE: Canon Speedlite 550EX
I know you probably have already fixed the problem, but in case you didn't, or just to help others with the same problem:
This morning I connected my 550 EX to my camera and had the same issue with the info on the LCD flashing incessantly. Turned out to be the diffuser on top of the flash head, the one you pull out, then down over the flash to soften the light. If the diffuser is pulled out even two millimeters from its resting position, the LCD won't stop flashing! Just push it back in, and voila!
hope this can be of help
Posted on Jan 06, 2008
SOURCE: Speedlite 540EZ and EOS 400D
Agreed. The 540ez will read the aperture from the camera with both in Manual mode. The 540ez will give you a distance based on that. Just don't use a shutter speed faster than 1/125, and adjust for ambient light with your shuter speed.
Posted on Apr 23, 2008
SOURCE: canon speedlite 540ez
I am having the exact same problem, but i just realized that this flash probably is not compatible with my newer canon digital rebel XT... are you using it with this camera or is this the same setup you've used before with success?
Posted on Aug 27, 2008
You can't. The metering systems are incompatable. You must use the EX range with the 400D, such as 430EX or 580EX (versions I or II)
Posted on Mar 23, 2009
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