JJC Lens Mount Adapter for M42 lenses to Sony E Mount Body (LMA-M42_EM) USM Its Internal Focus (IF) provides

Its Internal Focus (IF) provides fast and quiet auto focusing without changing the length of the lens

Thanks to the fluid damping system with separate control for pan

The B-00k has full metal knobs for better usability

Spirit levels are located on the top and bottom for precise alignment

Reversible 1/4"-20 & 3/8"-16 Screw

JJC Lens Mount Adapter for M42 lenses to Sony E Mount Body (LMA-M42_EM) USM Its Internal Focus (IF) providesMade of black anodized aluminum the KIWIFOTOS LMA M42_EM lens mount adapter allows M42 (Zeiss, Pentax, Praktica, Mamiya and Zenit) lens to be used on any Sony E Mount NEX camera body. Infinite focus is guarantee. There is no electronic communication between the M42 screw mount lens and the Sony E mount camera body, auto focus will not be available, however. Use the lens in the fully manual exposure mode (M), or in the aperture priority (A) mode and