85%. Megapixels. The higher the number of megapixels, the more detail the cameras sensor can capture. 10 MP. 33 MP. Image Resolution. Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution. 3680 x 2760 px. EOS-1Ds Mark III vs Other Canon Pro SLRs. EOS-1D Mark III. EOS-1Ds Mark II. EOS-1Ds Mark III: Imaging System: Standard screen: EC-C IV; Interchangeable with EC-series screens from all There is a 3 year gap between Canon -1Ds Mark III (2007) and Canon -1Ds Mark II (2004). All things being equal, newer sensor generations generally outperform the older. All things being equal, newer sensor generations generally outperform the older. CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies. has a removable battery. Canon EOS 1Ds Mark III. Olympus OM-D E-M1X. The battery is removable and can be replaced by the user if broken. has a rechargeable battery. Canon EOS 1Ds Mark III. Olympus OM-D E-M1X. HD3Ni.