Canon’s next generation D-SLR, the EOS 400D (Digital Rebel XTi in the US), is the company’s 
latest evolution in its ‘affordable’ digital SLR series. The 10-Megapixel (capable of producing A3-sized prints) EOS 400D offers up to ISO 1600 shooting, a new dust reduction system, nine area auto focus, Picture Styles, 2.5-inch LCD monitor which now also provides shooting information (the second control panel LCD is gone) and better continuous shooting buffering. Overall, it’s a very sweet offering which gives Nikon’s D80 and Sony’s Alpha A100 and Nikon D80 a good run for their money.
Positioned above the EOS 350D (Best Current Price: £442), currently the fastest selling SLR camera of all time according to Canon, the EOS 400D (Best Current Price: £475/$768) is the first camera to incorporate the EOS Integrated Cleaning System. Based on significant research into the causes of dust in D-SLR cameras, the system combats dust in three important ways: Reduce, Repel and Remove.
Canon has also developed an internal Dust Delete Data system, which can map the position of any visible dust on the sensor. This can then be deleted automatically after the shoot with the bundled Digital Photo Professional software. The EOS 400D (127×94x65mm, 510g) inherits a number of advanced features proven in higher-end EOS models, such as the EOS 30D and 5D. These include its 9-point AF system, Picture Style, 9999 image capacity folders and expanded Pictbridge functionality. BIOS: Technology Means Business