Canon digital sir is better than other sir cameras because it provides better pictures. The quality of the pictures is a lot clearer and easier to modify.
Ebay will certainly have Canon digital cameras, but a web search would bring up other options as well.
Canon cameras are pretty similar to other digital cameras. They are normally producing about 14 megapixel cameras now, and they usually have a flash, and timer feature.
Amazon, CNET, Trusted Reviews, Tech Radar, and Digital Camera HQ are all excellent choices for reading reviews of Canon compact digital cameras as well as other electronic products.
Other than eBay or Amazon, a great site online to purchase slim digital cameras is the Canon website. The website offers a number of slim digital Canon cameras for sale.
All most all brands who carry digital cameras have colored digital cameras. Some of these brands include Nikon, Kodak, Sony, Canon, Kyocera, Panasonic, etc.
Canon seems to be the leader in digital cameras. Some other top brands are Nikon and Olympus. The cost would depend on what your needs were and whether you went with a low or high end camera.
Any Canon camera with the EF-S lens system will work. That includes but isn't limited to all of the rebels (XT, XtI, XS, XSI, and the new T1I). The only cameras that WON'T work with your Rebel XTI lenses are Canon 1Ds, Canon 1Ds Mark II, Canon 1Ds Mark III, Canon 5d, Canon 5D Mark II. Another other Canon digital camera will do the job. The reason that these won't work is because they are full-frame cameras, which need a larger surface area of the lens and will not accept the mount from the smaller EF-S lenses. These cameras are all professional cameras and cost a couple thousand each.
The short answer is "Depends" The long answer is: From 1971 to 1987, Canon SLR bodies and lenses used the Canon FD mount. In 1987, Canon introuduced the EOS SLR system. All EOS cameras use Canon EF (auto focus) lenses. They can also use independently made lenses with EOS type camera mounts. Canon FD and EF lenses have completely different mounting connections and are not compatible with each other's camera bodies. All Canon DSLR (digital single lens reflex) cameras can use all Canon EF (or independent manufacturer equivalent) lenses made for film or digital cameras. Most Canon DSLR's have an APS-C sensor that measures 22.2 x 14.8mm. (This is smaller than the 36 x 24mm image size on 35mm film.) In 2003, Canon introduced EF-S lenses that were optimized for the APS-C sensor size. The EF-S lenses will only fit on Canon 20D, 30D, 40D, and 50D cameras (as of 2008) and all Canon Digital Rebel cameras.
First and foremost, the internet is always the best source for various comparisons of Canon digital cameras. Was in London Drugs the other day speaking with their representative about various Canon cameras and I can certainly say, I would go back to London Drugs in a heartbeat because their camera knowledge is incredible and I felt like I was getting more than enough educated comparisons which helped me make a correct confident decision.
The Canon EOS is a professional digital SLR camera. SLR cameras offer the user the range of options in terms of lenses, flashes, etc. that a regular film camera accepts. This ability for customization combined with the way it captures the image, which is more true to a film camera than other digital cameras, account of the price.
There are many great digital cameras on the market. For point and click cameras, the Fuji Film Fine Pix has been rated on of the top cameras. The Canon Rebel DSLR camera has received excellent ratings as well. These and other camera ratings are available at Top Ten Reviews website.
Canon carries the EOS brand of digital cameras and there are also EOS beauty products. Both of these are very distinct, one selling cameras and the other skin supplies.