Testing a 35mm f2 Non-AI

I've been playing with an old 35mm f2 Non-AI lens, that has some sort of fungus in its inner elements. This lens was perfect at its time and I wanted to see how did it perform in low light and short DoFs. The above image of my cat is one of a set that I uploaded to flickr.

All images were made BW JPGs in the Nikon D80. I haven't done any post-processing. All images had a +1 in Contrast in camera, while the last one had a -1. I've found I like this lens with a +1 more for modern look and a -1 for old looks.