Hey everyone,
So today I got a couple more of the cheap M42 to P/K adapters from China on eBay. I had good luck with one I bought off of a forum member a couple months ago. Between my girlfriend and I, we have piles of K glass and M42 glass. To make things easier, we were going to start taking an MX and a SPII with us for film use, then use a K-X for K glass, and leave the clip on the new adapter to semi-permanently turn my K100d into a digital M42 machine.
First problem-- I mounted the adapter on the body, and proceeded to screw in my Super Tak 135. Went in about half a turn, then snagged, and wouldn't go on any further, and didn't want to come off any further. It also did not want to come out. Nor could I get the adapter off the body because the lens was in the way. I ended up wrestling with it a bit, and the clip broke off (thankfully it fell right back out of the camera).
Second problem-- Looking at the adapter, the screw that holds the clip in place screws right through the ring, and blocks the threads. These are totally unusable without removing the clip bit.
Third problem-- The threads on my Super Tak are basically FUBAR.
I took a small rat tail file and smoothed out some burrs where the screw messed it up (wouldn't thread on a screw mount body before I did this). Works OK, but it isn't super secure on an M42 body any more. I might thread-lock a working K adapter onto it now.
Final problem-- it doesn't focus to infinity. I measured it next to my known working adapter and it's thicker by just shy of half a mm.
The seller is 'hkiron-aus' I'd recommend staying away.
Has anyone else had issues like this with this seller or cheap adapters in general?