I just printed the whole instruction with the attached photo in the LUF forum indicating the specific area to unscrew.
I have only adjusted the hex nut to infinity mark of my 50lux, and luckily the near focus at 1m distance is also perfectly calibrated. If you have both front and back focus issue, you will also need to loosen the nut at the connecting arm to tune further (careful as you may scratch your camera body!)
It is a wonderful idea that we can do this on our own, and don't have to send back to Germany for calibration everytime it gets "uncalibrated" again.
Do this at your own risk though if your set is not under warranty. If it is in warranty, worse case will be to send back to Germany for them to do a real calibration but at a long waiting time of 6 weeks...
I have only adjusted the hex nut to infinity mark of my 50lux, and luckily the near focus at 1m distance is also perfectly calibrated. If you have both front and back focus issue, you will also need to loosen the nut at the connecting arm to tune further (careful as you may scratch your camera body!)
It is a wonderful idea that we can do this on our own, and don't have to send back to Germany for calibration everytime it gets "uncalibrated" again.
Do this at your own risk though if your set is not under warranty. If it is in warranty, worse case will be to send back to Germany for them to do a real calibration but at a long waiting time of 6 weeks...
