I forgot to mention that I have that 50mm 1.8 lens and for certain things I've been very surprised at how well it's performed. I was in Northern Michigan a few weeks ago and I took some shots of the Milky Way. Here's a panorama with 8 shots stitched together:
Flickr Photo Download: MI_MilkyWay
It's drastically shrunk from the original but it's still pretty big. You can see some meteorites in the far right of the shot.
I was so pleased I'm considering buying the 28mm f1.8 prime, a 35mm f1.4 prime or the 50mm f1.4 prime. Alas they're quite a bit more money so I'm just considering at the moment!
