topic Re: Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III in Camera Accessories

Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III

A_Random_Dude — Tue, 14 Nov 2023 14:23:53 GMT

Hi, all:

I'm considering adding an R6 Mk II to my camera bag in the new year, which would be my first mirrorless. I know that I could use most of my Canon EF/EF-S lenses using the EF-RF adapter.

My question: Does anyone know if it's possible to use the 1.4x III extender in combination with the EF-RF adapter? As in this scenario: 100-400mm II > 1.4x extender > EF-RF adapter > R6.2.

Just curious; thanks in advance for your input.

Re: Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III

kvbarkley — Tue, 14 Nov 2023 14:50:18 GMT

Ken Rockwell shows an EF 100-400mm a 1.4x teleconvertor *and* a 2.0x teleconvertor on an R:

https://kenrockwell.com/canon/eos-r/r.htm#perf

It is goofy, but it worked.

Re: Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III

A_Random_Dude — Tue, 14 Nov 2023 14:59:24 GMT

Great to know. Thanks for that!

Re: Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III

Peter — Tue, 14 Nov 2023 15:20:44 GMT

I tried R6+adapter+x1.4+x2+EF800. AF still works but the lens correction will not when only one teleconverter is reported in Exif.