Ello! Got a brand new (yep, actually brand new, even though they were made from 1980-85) SMC-M 75-150/4. Some fluke of nature had a collector buy it and never use it. And it just r.o.c.k.s. I can't believe nobody has every raved about these on the forum before?
Mine cost US$110 delivered and many others go for peanuts. Unless I got a lucky copy or something - seeing as how I was lucky enough to get a great Tamron 28-75.
Will post pics after the weekend, but the incidental shots are something else.
And as for weird, after a week of using Tamron 28-75, it doesn't back focus at 28mm anymore - just faultless at all lenghts. I'm thinking this isn't normal?... hope it doesn't revert
I'll have to do the newspaper thing and post some shots, it's just sharp all over, from 2.8, and focus is f.a.s.t and spot on. It makes the grade as the 'if you could only have one lens' lens. And if you need to go wide, throw it on a Pentax film SLR!
Just an FYI.