Maybe this is a good place to ask this question...
I have a RokkorX 135 MC that goes onto my somewhat latemodel x370s. When properly attached the lens has a little wiggle or play to it. So far as I can tell I still have a light tight seal and it does not effect my photos, but I am a little worried about it.
I'm fairly certain that its not the camera. A 50mm MD lens mounts perfectly and is nice and tight.
Is there something I can do to correct this? Is this because I'm mounting an MC lens to an MD camera? Or, is there a common mounting ailment for the MCs that I need to know about???
You can take a look at whatever number of screws are in the back of the lens.
Sometimes the mount on the lens loosens up. A small crosspoint screwdriver should do the trick. Of course if it's old enough it may have slotted screws.