Canon has added the RF 800mm F5.6 and RF 1200mm F8 to their mirrorless EOS R series cameras using the RF mount. This is presumably due to Canon experiencing a little pressure from Sony, as they’ve recently started targeting sports and action photographers with high speed telephotos to go with the Sony A9 and A1 cameras. Even Nikon have announced an interesting alternative with their PF 800mm F6.3, which appears to be targeting birders but no doubt, due to the smaller sizer and lower weight, but will also appeal to sports photographers. It’s a prudent move from Canon, however these two new lenses aren’t quite what they appear to be.…