Sony A9 has a Sony E lens mount and currently there are 194 native lenses available for this mount.
The latest released lenses that are compatible with the A9 are the Samyang 14mm F2.8, the Samyang 85mm F1.4 and the Sony FE 50mm F2.5 G.
A9 also has a sensor based image stabilization system that is up to 5.0-stops effective which means that all of these lenses will be stabilized when used on the A9.
Since Sony A9 has a Full frame sensor, it has a focal length multiplier of 1x so lenses will provide their original focal length on A9.
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Sony A9 Lenses with Image Stabilization
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