Canon of the three types of Mount lens the use. Mounts, the original and the standard EF and two mounts, derived and ancillary EF-S and EF-M.

mounts EF in 1987 by Canon Inc introduced. This mounts the same, is something that the company is in cameras full-frame category top of herself, such as D Mark IV5 and D Mark II6 advantage of it. Each EF lens has a motor, auto focusing is internal and don't have this two, letter stands for Electro-Focus, meaning the Focus Electric. You products Canon lens with this mount, and without the ability to auto-focus domestic find never miss. But this thread is about the company, the third party applies not and some products and then for the mounts, EF of manual focus benefit. If the lens you see that for Canon camera supplied and details of certain of the Prudential offer? can almost be sure that it was the lens for mounts, EF is designed.

mounts, EF-S by Canon in the camera, the sensor crop, such as 7D Mark II, 80D, and 1300D are used. It is the place where the sensors in these cameras are smaller. lenses, the mounts can also be smaller and lighter. A lens EF-S on the mounts, EF will not work, but this photo, honest, not a EF lens without any problems on the camera that mounts EF-S will be used.