Canon Extender Lens FD 2X-B With Lens Cover In Case

Use of a Canon extender means a single lens can be increased by a factor of 1.4 or 2, thus allowing one lens to serve the function of two. The FD2x-A, designed for use with 300mm or longer telephotos and the FD 200mm f/4 Macro, can double the focal length of the lens on which it is mounted. It can also be used with zoom lenses which include a 300mm focal length. For lenses (including zooms) which have a maximum focal length of less than 300mm, the FD2x-B gives you a 2x increase in focal length. It is also recommended for use with the FD 300mm f/2.8L. The FD1.4x-A increases 300mm or longer fixed focal length lenses 1.4x. Naturally, all Canon extenders couple with the automatic diaphragm mechanism in the camera, so AE photography can be carried out as usual.