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Canon Cameras that Retain Autofocus with Canon Teleconverters?

Started Aug 22, 2014 | Questions thread
PalmettoFellow Senior Member • Posts: 1,171
70D will autofocus with all Canon lenses, even with 2X

Canon limits the minimum (maximum) aperture of their lenses to f5.6 to ensure compatibility with all af sensors. In live view, the 70D is capable of AF at f11!
So even an f5.6 lens with the 2x Tele converter, the 70D will autofocus on that camera. At least, it should unless Canon artificially blocks it.

 PalmettoFellow's gear list:PalmettoFellow's gear list
Canon EOS 70D Canon EF 100mm F2.8L Macro IS USM Canon EF-S 18-135mm F3.5-5.6 IS STM Canon EF 35mm F2 IS USM Canon EF-S 55-250mm f/4-5.6 IS STM +1 more
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