So, I just bought two cameras and 6 lenses + a bunch of accessories on CL, sight unseen (other than a quick glance to make sure there wasn't obvious damage) for $30. MD Mount MD Rokkor-X 50/1.7.. of course. Just after I bought the MC version from eBay - knew this would happen. This one is 55mm filter, so not the latest / smallest one, but still noticeably lighter than that MC. Gives me the chance to compare them. RMC Tokina 80-200/4. Never heard of it, and it won't lock in my adapter. Goes all the way, just doesn't lock in. Does any one know the possible fix ? Anyway, I don't know how good it is, Tokina's are tricky. Pentax PK/K Mount I never used this mount, and have no slightest idea about the lenses I got. The adapter is on the way though, so will see. If you have any opinion on any of these lenses, please let me know. SMC Pentax-M 50/2 - I assume it's a typical kit lens. It's quite a bit smaller and lighter than Minolta. Tou/Five Star MC 28/2.8 - the cap says "Toyo Optics". The reviews seem to suggest it's a solid, sharp lens. A 135/2.5 prime that says "Asahi Optical Co"on one side of the barrel , and Takumar (bayonet) on another. Feels solid and rather heavy. Has a pull-out shade. Focal 80-200/4.5, most likely a good hammer but will see..