fti
Established
I found that setting the lens at maximum aperture made, in my case at f/2 with the DR-Summicron, made it easy to focus. I was having a problem initially only because I tried to focus at f/11, having misread the instructions — setting to f/11 is the recommended aperture for making the actual copy exposure.
Using paper with print for focusing coveivably could result in less sharpness if the paper is not the same thickness as the negative.
I thought so too, but in my case i couldn't get it any sharper. It was also much easier on the eyes. Having said that I haven't tried focusing at max aperture. I'll try that next time around. I think I only have 2 more exposures left on my next roll 🙂