I wouldn’t recommend photographing animls with manual focus lenses. But when I aquired the classic, exotic Nikkor 50mm f/1.2 I couldn’t resist photographing a feline visitor in available 12 watt florecent light at night. If you love rotating lense barrels like I do, then it becomes a passion and obsession heh heh heh! I find out-of-focus background and highlights (“bokeh” in Japanese) visually addictive. In Shane’s photo (cat's name, above) her body is immediately blurred into creamy oblivion by using the widest aperature of f/1.2! This "fast" glass is now part of my arsenal in extreme low light photography. Kudos to Nikon for being backwards-compatible with manual lenses!