Canon EOS 1D Mark III User Guide - Page 32

Dimensions and Weight The dimensions of the EOS-1D Mark III are (W x H x D): 156 x 156.6 x 79.9 mm/6.1 x 6.2 x 3.1 inches. The weight is 1155 g/40.7 oz. (body only, no battery, no memory cards), 1335 g/47.1 oz. (with battery). Compared to the EOS-1D Mark II N, the height is 1 mm shorter; the body-only weight is a significant 70 g/2.5 oz. lighter, and the weight with battery is a remarkable 225 g/7.9 oz. lighter. The LP-E4 battery of the EOS-1D Mark III weighs 180 g/6.3 oz.; the NP-E3 Weight weighs 335 g/11.8 oz. Image-recording Quality Body Only With Battery EOS-1D Mark III 1,155g/40.7oz. 1,335g/47.1oz. EOS-1D Mark II N 1,225g/43.2oz. 1,560g/55.0oz. Mechanical Components Because of its lightweight and strength, magnesium alloy is used for the top, front, and rear covers as well as for the memory card slot covers. The chassis and mirror box are also made of magnesium alloy (instead of the EOS-1D Mark II N's aluminum die cast) to make the body very strong, rigid, and light. The magnesium alloy also works as an electromagnetic shield. Except for its deeper black color, the paint finish on the exterior covers is the same as the 1D Mark II N's. It is highly durable, allowing minimal wear even under harsh conditions. To equal the legendarily excellent water- and dust-resistant construction of the EOS-1D Mark II N, measures are incorporated at 76 places around the camera controls and along cover seams. Also, O-rings are used on the memory card slot covers and the battery compartment, and silicon rubber is employed around the top and rear covers and buttons where the user can see it and feel reassured. The EOS-1D Mark III's hot shoe is shaped to resist water with a rib around its perimeter. When the Speedlite 580EX II is attached, water resistance is maintained. When a water-resistant EF lens is attached to the camera, the entire camera-and-lens outfit will be water-resistant. Location of major water-resistant measures VIII. ROCK SOLID RELIABILITY 32