The Canon EOS 5D Mark II succeeds the EOS 5D, launched in October 2005, which marked the first digital SLR camera for advanced-amateur users to incorporate a 35 mm full-frame CMOS sensor and enjoyed lasting market acclaim. The EOS 5D Mark II features a newly developed full-size 21.1-megapixel CMOS sensor that not only realises outstanding resolution performance and rich gradation expression, but also offers an expanded standard ISO sensitivity range.