Originally posted by qwertyazerty I just used brute force and was able to get it almost all the way in, but it shouldn't be this stiff, should it? I'm gona try and clean the threads on both the adapter and lens tomorrow. I knew this deal was too good to be true (good thing it was cheap)
I thought brute force might work but didn't want to suggest it, just in case it didn't.
If it is minor issue with the threads, repeated on/off with the adapter might fix it. It might also loose things up a bit. I'd still take a good look at the threads first to check for visual damage. I'd also make sure this adapter is okay on a different m42 lens.