I knew I had a few more lenses from my wife's old camera. These are Pentax K mount, a Tokina SD 70-210 f4-5.6 manual focus, and a Pentax-A 35-70 f3.5-4.5, also manual focus. Are either of these decent lenses, and is there any reason they wouldn't work with an adapter on an E-PM1? Both of these lenses are much better feeling than the Nikkor that I asked about in another thread. And a more generic question, when comparing the focal lengths do these become 35-105 and 17-35 in m43 sizing? Or in other words the effective 35mm length is still the lens' stated length?