The Pros and Cons of Using Teleconverters (Extenders) on your ... Canon make two teleconverters for DSLRs – the 1.4x and 2x versions (and other manufacturers make similar models – for example Nikon's 2x, 1.7x and 1.4x).
Canon Teleconverter Compatibility Chart | Wex Photographic Extender is Canon's name for a teleconverter. These high-performance accessories multiply the effective focal length of an attached lens by 1.4x or 2x. For.
