The story: I've ordered a 3rd party M42 adapter for my new K5 sold by RainbowImaging
Amazon.com: M42 lens to Pentax PK K Mount Adapter Ring infinity focus guaranteed K20D K10D K200D K-M: Camera & Photo It arrived yesterday and I was eager to try it with my old M42 mount lenses. Guess what? It got stuck!
I have read other threads on this issue both here and on other websites, however neither offers a solution to the problem. The solution is simple though:
1. Lay the camera body on the back (LCD down)
2. Unscrew the 5 screws which hold the mount. Be extremely careful! Make sure nothing falls into the camera.
3. Carefully pull the mount out. Be careful! The connector pins have small springs under them, don't lose them, don't make anything fall into the camera. If you do it carefully enough, it can be done smoothly and easily.
Right under the mount there is a flexible ring with a connector welded to it. Sometimes the ring goes out with the mount. Make sure you do not break the connector. - be super careful here - at least one person broke it (see comments below)
4. When you have the mount with the stuck adapter out of the camera it is fairly easy to remove the adapter by slowly rotating it in clockwise direction (if you look from the top)
5. Carefully position the mount back and fix all 5 screws back it to the body. Make sure the flexible ring under the mount has not been displaced (there are tiny black pins on which it sits, which may be hard to see).
Tools you will need: jewelers screwdriver set, light.
Reason it gets stuck: Poor design - the tiny screw which fixes the flat spring to the adapter can be easily deformed when you rotate (install/or remove) the adapter. The screw protrudes too much from the adapter and may be blocked by a dent on the mount when you try to install/remove it.
What you may want to do to avoid the adapter getting stuck first place:
- Do read the reviews carefully before you by it
- do not force anything
- make yourself familiar with the tool which comes with the adapter. It can be tricky. The design of the tool is such that the tool itself may be blocking the adapter when you try to remove it without you noticing.
- If you are determined to try the adapter with the spring attached, make sure the tiny screw which hold the spring is not loose (mine was)
- Alternatively what many people do, just remove the spring altogether.
- before you install the adapter, carefully examine the design of the mount and take notice of the initial positioning of the adapter - it will help you remove it if it gets stuck.
I will try to add some pictures later. Hope this helps to someone.
In case you are not comfortable doing it yourself, I'm sure any local camera repair shop can do it. Or you can PM me and I will be glad to do it for you.
Last edited by vanyagor; 03-12-2012 at 02:12 PM.