Canon 5D MIII has a Canon EF lens mount and currently there are 257 native lenses available for this mount. Canon 5D MIII doesn't have a sensor based image stabilization system but 77 of these lenses already comes with optical image stabilization.
Since Canon 5D MIII has a Full frame sensor, it has a focal length multiplier of 1x so lenses will provide their original focal length on 5D MIII.
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