Quote:
Originally Posted by madwayne
If you are getting a 40D I would strongly suggest you also get the TC-80N3 remote for it as well. This will allow you to set the camera to bulb and then dial your exposure time (up to 99 hours from memory) and number of images at that exposure into the remote. Hit start and basically walk away. I use one with my 20D and it is a god send. The instruction manual is very easy to follow and after one night's use you really don't need the manual.
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You really don't need the timer if you are using the camera with a laptop computer. The camera comes with a utility program which allows all camera controls including bulb long exposures and timming to be controlled via a single USB connection. Exposures out to 10 minutes are easilly taken as long as you take dark frames and subtract in one of the stacking programs.
The 40D does a great job and makes control and focus easy.