There is a lot to be said about shopping local and supporting your local camera shop. Today I had a problem in that I fitted an older Macro Lens to my new Pentax K-30. It wouldn’t come off afterwards and I thought I had ruined the camera or would have to send it back for repair. Before doing that I called into my local camera shop, Cambrian Photography, where I had bought the camera. They were able to get the lens off for me without damaging my camera. Apparently one of the pins had failed to retract when I tried to release the lens. They freed it by inserting some film between the lens and the camera mount, which released the pin.