Question about Sigma 17-35mm f/2.8-4 (SG1735) Lens Converter

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I have a Sigma EX 17-35mm HSM. Compatibility?

I have the above lens which is not a DG lens. The autofocus doesn't seem to work with my Canon 400D. Is the lens not compatible with this digital camera?

I have had the autofocus motor replaced at a menders, but this hasn't solved the problem.

Many thanks.

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It may need a new circuit as well as a motor

Posted on Aug 08, 2009

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  2. if you don't mind using MF, u need the sigma 2x EX DG Tele Converter.

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