Samsung NX500 has a Samsung NX lens mount and currently there are 32 native lenses available for this mount.
Samsung NX500 doesn't have a sensor based image stabilization system but 7 of these lenses already comes with optical image stabilization.
Since Samsung NX500 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 NX500.
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Samsung NX500 Lenses with Image Stabilization
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