In the early 2000s, Canon's EOS-1Ds series was unchallenged in the high-resolution DSLR stakes, from the original 11.1MP version of 2002 to the 21.1MP Mark III of 2007. But in 2008 Canon lost the crown to the 24.6MP Sony Alpha 900, and has lagged behind ever since.
+ Extraordinary image quality with huge levels of detail; + Highly refined control layout and user interface; + Excellent; extremely accurate autofocus system; + Rugged; professional-level construction
Fixed rear screen is inconvenient for tripod work; Relatively limited ISO range; Huge file sizes