Just thought I'd share a little family Pentax heritage.
Back in the 70's and 80's, my father was very much into photography. He had his own dark room in our basement and a nice enlarger (I believe it was a Beseler but I can't recall for sure), and all his camera equipment was Pentax. Much of my childhood was spent waiting for him to focus his camera and get the f-stop and light right.
When I went to college, he gave me one of his MX bodies and a 50mm lens for my photography class, which taught me the mixture of art and science that is manual photography. Unfortunately, my father was taken from us too early in a farming accident, so I get enjoyment out of those times when I see bits of myself in him. Just playing around with his old lenses tonight on my K-r is one of those such times. The lenses are all 25 - 35 years old and seem to work extremely well. While they may not be my first "go to" lenses for action photography or taking candid photos of the kids, I foresee them getting more use over the years.
What a fun way to marry classic photography with new technology!