Originally posted by Driline I got this lens for Christmas and can't figure out who this manufacturer is.The focus and zoom appear to be stuck.
I have a similar model, received as a birthday gift a couple of years ago. Although I was excited when I took it out of its box, I quickly realized that, like yours, both the zoom and focus rings were stuck. "Darn," I thought, "another SDM issue. Great." Then, I mounted it on my shop vise, carefully clamped in a pipe vise attachment. Still couldn't budge the focus ring. Ah ha, I thought, time for the oil filter wrench. Nope, wouldn't move. Then I figured out something - it's really a pre-1980 lens, and the helicoid grease has hardened! Of course, that's the problem!
Now I just enjoy my coffee.
Craig