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 ...

The EXTENDER RF 1.4x and EXTENDER RF 2x are for press, nature and sports photographers looking to capture subjects at great distance. Reliable and durable, these extenders match the performance of ...

Canon announces the development of the RF 100-500mm f/4.5-7.1 L IS USM, Extender RF 1.4x and Extender RF 2x.

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 ...

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 ...