In response to requests from professional users, the new EOS-1D Mark III is more rugged, yet lighter than its predecessor. Able to withstand shooting in the roughest conditions, the 1D Mark III is clad in a magnesium alloy shell, chassis and top panel, providing impressive strength without excessive weight. All of the 1D Mark III controls and external cover seams are sealed from water and dust. Even the perimeter of the 1D Mark III’s hot-shoe is ribbed for water resistance, enabling flash photography with Canon’s new Speedlite 580EX II.
Other new features include an improved shutter, durability-tested to 300,000 exposures, powerful new metering, a new control interface that mirrors the design of other popular EOS Digital SLR cameras and a 100% coverage viewfinder with a larger pentaprism for higher magnification, plus a number of optional focusing screens.
Canon is also introducing a new, lightweight lithium-ion battery system that provides feedback on the LCD monitor, including number of shots taken on a charge, percentage of battery power remaining and whether the battery should be reconditioned with the charger. With the new battery installed, the EOS-1D Mark III body is about 1/2 pound (approx. 225g) lighter than the EOS-1D Mark II N body.