Pentax K 50mm f2: Infinity Beads

My sister in law has an old Pentax K1000 from her university days, so for a goof I popped off the lens and put it on my KX, it worked REALLY well and the camera focused nicely

ISO 800 F2 1/320 th of a second, and with hardly any post processing required! Its almost like a pentax lens on a Pentax body works like it belonged there :) and this lens is 20+ years old