Canon 5D MIII has a Canon EF lens mount and currently there are 257 native lenses available for this mount.
The latest released lenses that are compatible with the 5D MIII are the Samyang MF 14mm F2.8 Mk2, the Samyang MF 85mm F1.4 Mk2 and the Irix 45mm F1.4.
Canon 5D MIII doesn't have a sensor based image stabilization system but
78 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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Canon 5D MIII Lenses with Image Stabilization
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