Exceptions
Canon has two further types of lenses compatible with the EF mount: Tilt-shift and the 1-5x Macro lens, which are not designated EF, but TS-E and MP-E respectively. TS stands for Tilt-shift while MP stands for Macro-photo. These types of lenses are not designated EF as they are manual-focus only lenses, and therefore are not electro-focus. They do, however, retain electronic aperture control as well as focus confirmation.
Read more about this topic: Canon EF Lens Mount
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