03-27-2015 01:55 PM
I have a 600D that I use a f4.5 L series 100-400 on. If I buy a extender 1.4x ii, can I assume manual focus only? I had read that a firmware update may change that.....
Thanks
03-27-2015 02:07 PM
It will be MF & don't expect a firmware upgrade that changes that.
03-27-2015 02:17 PM
Fair enough, I really don't mind the MF, I was just curious. Thanks
04/16/2024: New firmware updates are available.
RF100-300mm F2.8 L IS USM - Version 1.0.6
RF400mm F2.8 L IS USM - Version 1.0.6
RF600mm F4 L IS USM - Version 1.0.6
RF800mm F5.6 L IS USM - Version 1.0.4
RF1200mm F8 L IS USM - Version 1.0.4
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EOS 1DX Mark III - Version 1.9.0
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EOS R6 Mark II - Version 1.3.0
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