I have been using an el-Nikkor 50/2.8 lately and I am delighted with the lens - a huge step up from the generic lens that came with my enlarger. It's great on the enlarger but truly sings when reversed on my F3 for 3x life size magnifications. And this gem cost me all of $20! So, I am wondering if there are any shorter enlarging lenses out there that are of similar high quality and go for cheap (I assume that very few people are using the odd smaller than 35mm film formats). I would love to put them to use for some even higher magnifications. -A PS: Even though I don't plan to use this lens for enlarging, I hope it's okay to post this question on this forum.