I do a lot of night photography of my lighting work. I have a Nikon D40x but would like to either upgrade my lense or whole rig for something that will give me better results. I have not been able to get really tack sharp images and I am sure it because of the basic kit lense that came with the camera. I have been looking at a Nikon D90 with an 18-105mm lense. Is there a good low light lense anyone can recomend for my D40x or should I just be looking to upgrade. Here is some of my work and photography: 1. 2. 3. 4. 5.