I used this lens with a 35mm film Canon EOS Elan without a problem. I replaced the camera with a Digiatal Canon Rebel XTi recently. The Canon EF 35-80MM zoom seems to work just fine on the digital. However, the first time we attempted to use the Quantaray 75-300mm F4-5.6 it caused an error message to appear "Err 99 shoting is not possible. Turn the power switch to <off> and <on> or remove and reinstall the battery. It seems to be ok on flash and in lower light situations. What do you feel is the issue?
Same problem here. When I called Canon to get help, I was told that the Error 99 meant there was a communication error between the camera and the lens. Since the lens wasn't a Canon, he couldn't help me any further.
Comment by Guest, posted on Mar 03, 2008
I have the exact opposite problem. My 100-300mm lens works fine, but not the 28-80lens.
I have been researching this problem and found there's nothing you can really do. Appararently, the quantaray, being an older lens, wasn't made to work with this latest era of cameras. Though it might work perfectly with your older camera, its technology is outdated as it relates to digital cameras and can't mesh with the latest and greatest. By the way, most of my questions were answered on the Digital Camera Resource page (www.dcresource.com
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