Samsung NX5 has a Samsung NX lens mount and currently there are 34 native lenses available for this mount.
The latest released lenses that are compatible with the NX5 are the Lensbaby Burnside 35, the Samyang 20mm F1.8 and the Lensbaby Velvet 56.
Samsung NX5 doesn't have a sensor based image stabilization system but
7 of these lenses already comes with optical image stabilization.
Since Samsung NX5 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 NX5.
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Samsung NX5 Lenses with Image Stabilization
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