Amazing how quickly it has helped!!
Originally posted by StepOne
I have the Vivitar 100 f3.5, with 1:1 adapter (didn't use that anyway, but it's there), is the same lens. I am surprised yours is still for sale, at this price is a steal. Yes, is plastic, feels cheap, but oh boy, the optics! Went with Nikon also for a while, sold a lot of lenses for Pentax, but never the 100. Now i got a white K-50 (black frame), replaced solenoid with a white one and I'm back on track, can't wait for better weather to take the 100 for a spin. Can't imagine better value for a manual lens. Just my subjective opinion.