Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
if you don't want to hold down the shutter button manually, get a RC1 remote (~$30). Then, you can tripod your camera, and put it on BULB mode as mentioned, and then control the shutter using the remote. This way, you won't have to hold a button for so long. Plus, it gives you an excuse to buy a new toy.
The RC1 wont work for the 30D. It doesn't come with a wireless remote sensor. You have to buy the canon wireless remote (around 400 bucks) or an aftermarket one. You don't have many choices.
Any idea of the RC1 will work with the 40D?