Question about Quantaray Tech-10 70-300mm f/4.0-5.6 for Canon EOS
While indoors, I can focus and take pictures using this lens. However, when I try to take pictures outdoors, I get an error 99 message (turn power switch to off then on again or re-install battery). No picture is taken. I spoke with a Canon tech who said error 99 means there is a communication problem between the camera and the lens and he couldn't help me since the lens was not one of their products.
On most lenses the way to test if your old lens works on a cannon digital to set the camera to AV then set the iris to the small setting ie F16/F22 then use the stopdown button.
Things that might happen
1 The lens will close down OK
2 The error 99 will show,will need are rechip if avaliable
3 Nothing happens, will need a rechip
Q.Why will it work inside but not outside.
A. Inside the camera needs light so the iris is full open, outside the lens needs to close down and if not compatible it is unable to close down. will need a rechip
Posted on Nov 06, 2008
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Posted on Jan 02, 2017
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