SMC Pentax-L 43mm f1.9 SpecialYes, Pentax did make Leica thread mount lenses! That is to say, they made one specific model (this one) and only 2000 in total. But it's a great lens, with a useful normal wide focal length, a fast f1. 9 aperture, and excellent imaging. It's a Leica thread mount lens, but it's compatible with any M mount camera using the included adapter. This example has light paint and finish wear, clean glass, good function.