gorbas
Subscriber
Yes, benefit of using 80-75mm for 35mm and 50mm lens for medium format is that you will save on the length of the set up.I assume the 80mm lens is for the 35mm negatives and a 50mm lens would be for medium format. Just guessing. Or by using bellows will the 80mm enlarging lens work for both formats?
Right now my 6x6 set up with Full frame sensor and 55mm lens is around 26cm long (from sensor to negative carrier).
To copy 24x36mm negative with APSC sensor and with 75mm lens, length of the set up is around 32cm.
You need to check minimum magnification with your bellows (fully compressed), camera and lens you are using.
When I started this journey I already had most of the stuff I needed. It was fun figuring our everything from hardware to workflow.
If end up with Nikon DSLr you need just mechanical adapter M39 or M42 to Nikon, without the optical element.