Hi everyone,

For some unknown to me reason, the focus nobs on both sides of my 4x5 Linhof Technika / I think it's V / started to move very tightly, almost impossible to rotate. Is there any control on how tight rotating should be, or may be I accidentally pressed or turned on some kind of focus lock? I have been using it for a few years now, it's always been slightly tight, especially at very close distances, but never had to apply a real effort to adjust the focus. I could not find anything for the focus lock in the manuals I have.

Thanks for your help and advice.

Rado