Sony A57 has a Sony/Minolta Alpha lens mount and currently there are 143 native lenses available for this mount.
The latest released lenses that are compatible with the A57 are the Tamron AF 28-80mm f3.5-5.6, the Tamron 17-50mm f2.8 XR II LD and the Tamron AF 28-75mm f2.8 XR LD.
A57 also has a sensor based image stabilization system which means that all of these lenses will be stabilized when used on the A57.
Since Sony A57 has a APS-C sensor, it has a focal length multiplier of 1.5× so you have to multiply lenses original focal length with this multiplier to find the Full Frame equivalent focal length of the lens when mounted on A57.
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Sony A57 Lenses with Image Stabilization
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