Hi

I have just bought a Schneider 360 f6.8 Symmar S on a compur 3 shutter
Its very clean and gives very nice sharp images
the only thing is that the front element can move about 1mm
if I point the lens down I can push it up
Is this normal ?
can I just screw in the front ring to tighten it up
its not loose but that looks like what one might do

thanks

robin