I camped in the desert a few weeks ago and made my first attempt at photographing the starry sky. I had my Canon 5D with a 24-105 L lens. I experimented a bit with changing the aperture from 4 to 5.6 (huge reduction in the number of stars captured) and with changing the ISO from 1600 to 800 (again, a huge reduction). I kept a fixed 30-second exposure to try to minimize the star trails. The picture in the link below is an example of the ISO 1600, f4. http://www.cgclarkphotos.com/page9/files/page9-1015-full.html So I got to thinking that shooting with a wider aperture lens would be even better. I am thinking about renting the 35mm f1.4 for the next time I get to go ouot in the desert. Thoughts?