EF extender stacking

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J.K.T. Regular Member • Posts: 301
EF extender stacking

As far as I know it is possible to stack version II 2x and 1.4x extenders, but not version III ones. Can anyone tell what has changed? Is it the rear of 1.4x, the front of 2x or both? Is it possible to stack 1.4x III in front of 2x II? Those are roundabout ways of asking the real question: Is it possible to stack EF 1.4x III in front of RF extenders with a modified adapter?

 J.K.T.'s gear list:J.K.T.'s gear list
Canon EOS 7D Canon EOS 7D Mark II Canon EOS RP Canon EF 135mm F2L USM Canon EF 300mm f/4.0L IS USM +13 more
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