TTartisan reveals Leica M-mount to Sony E-mount lens adapter with pre-encoded focal length selector

Chinese optics manufacturer TTartisan has gotten into the lens adapter game with a new Leica M-mount to Sony E-mount adapter. What's unique about this adapter is the inclusion of a little rotary dial on the barrel of the adapter that lets you select the focal length of the attached M-mount lens so that information can then be transferred to the Sony E-mount camera for improved in-body image stabilization support and EXIF data. Many M-mount lenses lack contacts for transmitting any kind of metada...