Since I mostly do MF work, I've been getting by with a 75mm lens for everything on my Besseler 23C. It works in a pinch for me for 35mm since I don't tend to take it beyond 8x10. With that said, I have a 50mm El-Nikkor somewhere, but its location eludes me and I'd really like a 50mm for 35mm work. Since LTM boards are readily available, the thought occurred to me to use a lens I already have on hand and use for photography-a 1940s collapsible 5cm 3.5 Leitz Elmar. Some research indicates that this lens was once a popular choice as a "dual duty" lens, and I'm wondering about using it in place of buying another El-Nikkor or some other 50mm lens. Any thoughts on this? I know I should probably just buy a proper enlarger lens, but at the same time I know this is an excellent lens for photography.