Just like with any 2x teleconverter, the focal length of the attached lens is doubled, with a consequent aperture reduction of two f/stops. As such, a 70-200mm f/2.8 zoom effectively becomes roughly a ...
Add Yahoo as a preferred source to see more of our stories on Google. Canon RF 200-800mm f/6.3-9 IS USM lens on a Canon EOS R5 camera held in hands. Every so often, a new big superzoom telephoto lens ...
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