I have a homebrew trailcam that a friend helped me build. It uses a Canon Owl 35mm, and takes some pretty nics pics.
Mine has taken pics of deer, elk, bear, coyotes, bobcats, and turkeys. I'm still waiting for some Mtn Lion pics.
Here's the website if anyone wants info on building their own. Browse around until you find the page for Homebrew trailcams. There's also forums for jsut about everything imaginable.
www.jesseshuntingpage.com
sliverpicker