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Posts: 11,698
Registered: ‎08-13-2015

Re: 2 x extender autofocus

@CaliforniaDream wrote:

This use to be true, But not anymore!

@Waddizzle wrote:
No, it is not faulty. The 2x extenders do not work with, or allow for autofocus, with any and all combinations of cameras and lenses.


It still holds true for the OP's EOS 7D DSLR camera.


"Doctor told me to get out and walk, so I bought a Canon."
Frequent Contributor
Posts: 119
Registered: ‎11-14-2018

Re: 2 x extender autofocus

Absolutly correct

Posts: 13,998
Registered: ‎12-07-2012

Re: 2 x extender autofocus

John Hoffman's unofficial samples proves that a native lens can and does produce similar results, perhaps even a bit better, when cropped to tel-con status as the addition of the tel-con on the lens.  So why bother?

EOS 1DX and 1D Mk IV and several lenses!
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