A távmérő beállítása sem nagy ördöngösség. Itt egy leírás róla:

fed&zorki_survival_site

És itt van mégegy:

"...
Aside from adjusting for infinity, it is very *criticial* to have the rf adjusted for close focus as well. I've found that in many instances, especially for cameras whose mounts have been interchanged or modified, that infinity correction doesn't guarantee accurate focussing down through the near settings. I think it's better to adjust for close settings first and then correct the rf for infinity.

To do this: set camera on tripod 2 metres from a wall target. Two metres is measured from the back of the camera and spans up to the wall target. Focus with the rf and see if the lens distance scale agrees with this. It the "2 M" mark is off (if it's off by 1 mm from the focus index, then it's really off!), take out lens, and gently turn the sloped rf sensor head. Turn it up if the focus scale indicates a distance past 2 M and turn it down if it says closer than 2 M. Once done, adjust the rf for infinity using that famous :) little screw between the rf/vf windows.

From my experience, cameras whose rfs were properly adjusted for both 2m and infinity measured distances accurately,and gave correct focus with glass like the Ju-8 and Ju-3, Leitz Summitar, etc.
..."

Kipróbált recept, én ez alapján állítotam be a 3opkuú-4 gépem távmérőjét.