I've got a wheelbarrow-load of older, third-party, all Pentax-mount, mostly manual lenses that I will likely never use. A few primes, but mostly zooms of the 70-200mm range. Some are superbly sharp.... like some of the older Vivitar 70-210mm, 80-200mm and 75-210mm zooms. I've got Osawas, Samyangs, Cosinas, Tuo-Five Star, Soligors, Sears, CPCs, ..... and all are in good condition. I just have no use for them. But, at the same time, they have SOME value. Not that I'm wanting to make any money off of them.... heck, I'd gladly GIVE them to someone if I thought they could/would use them.
I collected them over the past few years while I was "learning the ropes" about the digital photography world. It would be more trouble than it's worth to get them all out and individually photograph them.... I think. Who knows. Maybe I'll suddenly get the wherewithal during a rainy day soon and drag them out and spend the day having a marathon lens shooting event!
I'm in a quandary. What to do. What TO do? Donate them to the local Goodwill, you say? No, I've seen how they're treated. Thrown in a shopping cart, like so much cord-wood. I just couldn't see good lenses treated like that. I'd rather let them continue taking up space in my lens cabinet than do that.
Not long ago, I had several lenses that were NOT Pentax mount lenses.... actually quite nice ones.... and I gladly and willingly "donated" them to a PF poster. I never got as much as a note saying thanks. What the hell is wrong with people now-a-days? I don't know.... maybe I'm just too old school. You know, back in the days when we said thank you, and please and such.... and meant it? That was just part of good up-bringing.
I'll get down off my soap box now.... and quit my ranting and rambling on. But, you see my point? I guess it's a lot like having a wheelbarrow full of typewriters, eh?