|Original Lens:||Vivitar 75mm f/3.5 Enlarging lens|
I bought this lens on ebay, it was much smaller than I thought it would be, but still worked out pretty well.
I used an old photo bag, heavy dark plastic, and taped the lens to an extension tube. This lens worked out better for longer range shots since it can collapse closer to the lens for better focusing. Plus I am still able to adjust the aperture.
Here are some sample photos: