Canon extender

I just got the Canon EF 70-300mm f/4-5.6 IS USM and I knew my Canon 1.4 Extender would not work with it. But then I thought, there is a need here and maybe some other company like Sigma has made one that will work with this lens. Does anyone know of one or done research to find one?

Thanks,

John

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Permalink Reply by Sylwester Zacheja on January 5, 2010 at 10:16am

Look for Tamron - I have one (don't remember at a moment the specification).
They make extenders that don't need tapping pins and AF is still working with every body,
not only with 1D-1Ds series...

Regards,

Sylwester

Permalink Reply by John Daly on January 5, 2010 at 10:46am

Sylwester,

Do you use yours with the lens I am using, Canon 70-300 EF? This is not the L series lens.

Permalink Reply by Sylwester Zacheja on January 5, 2010 at 11:00am

I tried it with my old 75-300 IS and it was ok (I'd sold this lens and got 100-400 IS L and 70-200 F4 IS L). Of course, you can expect some lower quality, that's a consequence of extra glass but acceptable.

I know that Daniella was using it with her EF 400/5.6 L for BIF (birds in flight) and was glad with it.
Watch her gallery: http://www.pbase.com/zylen

Sylwester

Permalink Reply by John Daly on January 7, 2010 at 7:37am

Sabah Al Khair, Frenzyyy, shukran.

John

Permalink Reply by Alan Ang on January 7, 2010 at 5:17am