Hi new here, if I mess this up please let me know mods. I bought this lens to use on my e-pl1 as my everyday pocket camera and I love old Pentax stuff. I am using an adapter from ebay seller rainbowimaging. These lenses are ridiculously tiny and that is exactly why I bought them despite having a fixed 2.8 aperture. Pentax 24 2.8 110 lens, Pentax 18 2.8 110 lens, Pentax 50 1.4 Super-Takumar ISO 100 1/100 @ 2.8 of course. Near minimum focus distance. ISO 640 1/60 Near minimum focus distance. ISO 200 1/1000 Near minimum focus distance. ISO 200 1/100 Too close? Probably! ISO 1250 1/40 All photos edited in LR3. I think this lens is a fun lens to shoot when you want a certain look. I would not shoot landscapes with it. It produces soft borders with a surprisingly sharp center. The bokeh is certainly Pentax which I like. Focus is smooth and build is solid and light as a feather. Did I mention they are TINY even with the pricey adapter. Post them if you got them!