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Canon Cinema EOS Camera Systems
For all Canon Cinema EOS models: C700 / C300 Mk. II / C200 / C100 Mk II and EF / PL lenses.

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Old May 15th, 2013, 09:04 PM   #1
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C100 and sigma lens issue: very minor

I have a Sigma 30mm f1.4 that I bought originally for use on the Black Magic Camera. It does have autofocus capability. I just tried it on the C100 for the first time and the auto focus button only works when the lens is wide open.

At f1.4 the autofocus hunts and find a sharp image.
At f1.6 and higher it just doesn't do anything! It's like it's not working.

This is not a deal breaker but I am curious if this type of behavior has been observed on any other lenses?

Thanks.
Marty Hudzik is offline   Reply
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