For the fourthirds (NOT microfourthirds unless an adaptor is used) system.

A great addition to any of the telephoto lenses from the old system. Unlike the new MC-14, the front element f does not protrude, so compatability is much wider. Works fine with adapter for microfourthirds like the MMF-1,2,3 and Panasonic and 3rd party adapters, and the change in focal length and maximum f-stop is properly detected too.

Original caps. Excellent condition optically and cosmetically.