Mar 1, 2019 ... A lens adapter joins a lens with a given lens mount, to a camera body with a
different lens mount. ..... Lower priced adapters may work with your lenses (you'll
have your best luck with Canon lenses .... Pixco Pro Focal Reducer.
As described no problem with focus to infinity. Tried on Zeiss 135.
Good quality, however, it does not infinity focus and tends to be difficult to remove from the camera body. The one to get is the one pictured here without the flange covering the K mount surface. This one allows for infinity focus. Once you know how the clip works,... no problem getting it in and out with a "custom tool" or hardwood toothpick. I would not remove the spring clip that locks it in the camera as your lens may fall off!