Optics and Resolution
The EOS-1D's newly developed 4.48-million pixel CCD sensor (4.15-million effective pixels) is a full 28.7mm by 19.1mm in size--with square pixels a full 11.5 microsn by 11.5 microns. Another benefit of the large 4.15-megapixel CCD is that the lens focal length factor is only 1.3x. This means your wide-angle lenses will behave similarly to how they do on a 35mm SLR film camera, a huge benefit to photojournalists, commercial photographers, and many other professional shooters.

The CCD imaging sensor electronically times shutter speeds, and makes possible speeds as fast as 1/16,000 of a second. The EOS-1Ds shutter-release time lag of 55 milliseconds is faster than any contemporary digital SLR. With Canon's Active Mirror Control method, blackout time between exposures is a barely perceptible 45 milliseconds, and thanks to a generous buffer memory, the EOS-1D can fire up to 21 consecutive frames (at up to 8 fps) in its full-resolution mode,

The EOS-1D can record both a RAW image, for optimum image quality and archiving purposes, and a separate full-resolution JPEG file which provides quick access and small files sizes simultaneously.

Body
Professional photographers need tools they can depend on in any conditions. The EOS-1Ds body is built of cast magnesium alloy, combining strength, rigidity, and effective magnetic shielding of the electronic components.

The EOS-1D is the most extensively protected camera in its class. Seventy-two points on the cam