<p>I've recently acquired a second hand Nikon FM2/T body, and after giving it the once over to make sure everything is in order I've discovered that the judas window is dark.<br> If I put a lens cap on, and shine a torch on the aperture ring of the lens (in the dark), I can just about make out the aperture marking in the viewfinder window, but otherwise, looking through the viewfinder you can't even tell that it's there.<br> Has anyone encountered this before?<br> Any suggestions as to what the problem may be, and whether there's an easy fix?<br> If it's a major issue to fix, I may just live with it as is... the camera seems perfectly ok otherwise.<br> Thanks in advance, Jonathan</p>