I picked up a Spiratone 300/5.6 mirror lens on eekBay for $5.50. I'd never seen one and this one was sold as "parts", couldn't resist. All it needed was a good cleaning. Major PITA on a CAT, I discovered. :-( Actually even clean it's still a terrible lens, but BOY oh BOY is it fun! Tiny, and really LONG on the D.
Anybody know if any one makes a good 300/5.6 CAT? Don
