The Canon EOS 400D / Rebel XTi digital SLR is the successor to the best-selling EOS 350D / Rebel XT. Announced in August 2006, it combines a number of anticipated improvements along with a few genuine surprises.

Most people won’t be surprised to learn the 400D / XTi now features a larger 2.5in screen and Canon’s Picture Styles, but following the earlier EOS 30D, many equally expected the new entry-level body to employ the same sensor as its predecessor.

But instead of re-using the 350D / XT’s 8 Megapixel sensor, Canon’s developed a brand new 10.1 Megapixel CMOS sensor for the 400D / XTi. This makes it Canon’s highest resolution digital SLR with an EF-S lens mount to date.

In addition the EOS 400D / Rebel XTi is the first Canon digital SLR to feature a self-cleaning sensor which shakes off dust particles. Reference frames can also be tagged to images for automatic removal of more stubborn dust particles later using supplied software.

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