Seeking advice on zone focus for my Vito CL
First of all thanks for this community, this is a great place for information and inspiration. Feel free to skip the first couple of paragraph for my issue.
I've recently got a Voigtländer Vito CL, made in West Germany, which I spent some time with. I managed to smooth out the sticky shutter- and aperture wheels and I set my zone focus by finding the infinity focus before reassembly.
After shooting my first B/W roll I got the prints back and while not expecting perfect results I was a little let down by the inconsistency with my zone focus. Some shots look great in focus while other are a blurry mess but I can not see any pattern with the blur. some long range shots are fine while others are blurry. Most, but a few, of the closer range shots are blurry. I shot at around 11-16 aperture which should be forgiving enough for my novice estimations of zone focus.
So I went back to the workbench and spent a Saturday tinkering with the focus element, I set up a test range of objects placed at 1-2-3-4 meters and I taped a piece of opaque plastic where the film would lay so I could test the focus at 2.8 aperture, not a perfect setup but I am no professional either.
Here is my situation:
* If I set the infinity focus on a building across town, objects at the far end (4m) seems fine but the closer the objects get, the more off the focus is, objects at 1m form the camera are in focus when indicator is on 1.6m
* If I set the focus to be crisp on the object by 1m, objects by 3m out are now not aligned to the indicators
It seems to me that I am able the get crisp focus but the range is smaller than expected and I can't wrap my head around how that could be. Is it possible that I am on the wrong thread when screwing in the focus element? The brass threads are sort of worn and it is not easy to find the thread, I tried three different positions before I found the current one which is the only one giving me any clear image at all.
I am new to analog cameras but I thoroughly enjoy tinkering with them, this might be a great new hobby.
Thankful for advice and input