I have a couple of OM mount zoom lenses that I've collected buying sets with some primes lenses I wanted. I'm selling these because I have the range covered with other lenses. Soligor MC C/D 80-200mm F4.5 macro ($20 + shipping) 2.5 inches x 5 inches - 1.25 lb (64mm x 127mm - 566 g) Kalimar MC 80-205mm F3.8 ($15 + shipping) 2.5 inches x 6 inches - 1.75 lb (64mm x 152mm - 794 g) On both, the aperture and focus are smooth, the glass is clean of scratches and fungus and they have minimal wear; EX condition. I've tried both out with an adapter on my 4/3 gear and natively on an OM-2 film camera. If you have been thinking of getting longer lenses and want to test out the 100-200mm range, this is a cheap way of trying it out before buying digital lenses. You'll need to buy an OM adapter if you don't have one. If you need references, I've been posting on other forums and selling on eBay with this username for several years.