As a 1.4x teleconverter, the focal length of the attached lens is magnified by a factor of 1.4x, with a 1 f/stop reduction in aperture rating, so a 70-200mm f/2.8 zoom effectively becomes roughly a ...

Over the years Canon has produced a number of lenses with built-in teleconverters, but so far the RF mount has been left out of Canon's plans. This looks set to change with the first credible rumors ...

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 ...

Canon has announced four new RF lenses for the RF-mount, plus two new extenders. New lenses are the 85mm Macro, 100-500mm telephoto zoom, 600mm, and 800mm lenses.

We've spent a little time with the brand new RF 100-500mm F4.5-7.1L IS USM zoom lens for Canon's full-frame mirrorless cameras, so ahead of our full review, check out our first impressions now... This ...

The Canon RF 70-200mm f2.8L IS USM is small, sharp, and steady. It’s almost perfect, but the incompatibility with teleconverters will put off some photographers. Why you can trust Space.com Our expert ...