EOS-1Ds raises resolution to 11 megapixels, uses a CMOS sensor (just like the EOS-D30 and D60) and is the first Canon digital SLR with a sensor which captures a full 35 mm frame.The EOS-1Ds covers almost every other type of photography, from landscape to portrait, photo journalism to weddings. The ability to use 35 mm lenses at their designed focal length (field of view) combined with the high pixel count will be strong points for those film photographers who have hesitated on going the digital route because of these two issues. The base of the camera contains the large battery pack and allows for the integration of a vertical (portrait) hand grip and control system. Build quality is superb, the entire body moulded from magnesium alloy with environmental seals around every compartment door, terminal, connector and button.