Made of black anodized aluminum the LMA-M42_NX lens mount adapter allows the use of M42 (Zeiss, Pentax, Praktica, Mamiya and Zenit) lenses on the Samsung NX camera body. With the adapter your Samsung NX10 camera will no longer limit to one lens but a variety of M42 lenses for great picture quality and more fun. The adapter is manual and camera modes which control exposure by automatically adjusting aperture are not available. Preserve all focusing range up to the infinity point.