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compatibility for 7D and speedlite EZ models?

Alisha Bennett , May 21, 2010; 11:27 a.m.

Hi I was wondering if the EZ models are compatible with the 7D. I had heard a rumor that older flashes would ruin the newer model cameras. Is this true, or am I able to use my old EZ flash with this new camera? Thank you for your help!
Sincerely,
Alisha Bennett

Responses

Henry Clark , May 21, 2010; 11:34 a.m.

The old EZ flash will not damage your EOS 7D.
It won't work very well either. It relies on the body having a sensor to measure the light reflected off the surface of the film. Digital cameras don't have this sensor, so it will only work if you set the flash power manually on the Speedlite and manually set an appropriate ISO, aperture and shutter speed on the camera.
If you want to use an old flash the 299T has a reflected light sensor built in and at least gives you some automation.
Only the EX series speedlites work properly with the Digital bodies.

Henry

Philip Wilson , May 21, 2010; 12:46 p.m.

As Henry says - this link will explain it all for you

http://photonotes.org/articles/eos-flash/

JDM von Weinberg , May 21, 2010; 11:09 p.m.

There is a lot of debate about it, but in general it's probably wise not to use very old manual flashes that may have too strong a zap in their connection with the camera (speaking technically, of course). I don't think this is a problem with the EZ flashes, but as Henry says, they won't really be a lot of use either.

NK Guy , May 28, 2010; 12:17 a.m.

> There is a lot of debate about it
There is not a lot of debate about it. As Henry says, EZ flash units cannot damage the EOS 7D, though they cannot meter automatically. The EOS 7D is also capable of withstanding flash units with up to 250 volts trigger voltage, which is high enough for the majority of older (pre 1980s) flash units, though of course not all.

NK Guy , May 28, 2010; 05:25 a.m.

> There is a lot of debate about it
There is not a lot of debate about it. As Henry says, EZ flash units cannot damage the EOS 7D, though they cannot meter automatically. The EOS 7D is also capable of withstanding flash units with up to 250 volts trigger voltage, which is high enough for the majority of older (pre 1980s) flash units, though of course not all.

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