My new lens showed up in the mail tonight. Its aperture of f/1.8 makes it ideal for taking photos in low light. My professor Mark Abraham suggested I get this lens for a photo essay I am shooting on feral cats. I had to take a walk and test my camera. I found this guy by DuPont Circle ending a cathartic night of drinking, literally on the sidewalk next to him. I was really impressed with the color my lens produced in this dim light. If you have a Nikon purchase a Nikkor 50mm f/1.8D AF, a bargain at $100 new.