It comes with a 10 megapixel APS-H CMOS sensor (1.3x FOV) and Dual DIGIC III processors.

Able to shoot at 10 frames per second (for up to 110 frames) it also features a 19 area Auto Focus system and a large 3.0 inch LCD screen (230K pixels resolution) with the ability to frame your scene in 'Live View' mode.

The Canon EOS-1D Mark III comes with integrated cleaning, ISO of up to 3200 (expandable to 6400 (H) ) and a wider and brighter viewfinder than previous models.

If you're used to shooting with a film camera, you'll notice some differences when you switch to a digital model. Here's a quick summary.

Key differences: Powering the camera | Recording pictures | Framing shots |  
Snapping shots | Storing pictures | Displaying pictures | Printing pictures

Powering the camera

Film: Takes disposable batteries that require infrequent replacement.

Digital: Takes one or more of a variety of battery types--both disposable and rechargeable--that require frequent replacement or recharging.

Many digital cameras use batteries designed specifically for them

In order to choose the right camera--one with the right set of features at the right price--you'll need to figure out what you'll be doing with it. Match your needs to one of these user profiles.

User profiles: Snapshooter | Trendsetter | Business user | Serious amateur |  
Budget buyer | Undecided

As much as we'd like to give a one-word answer, this is one of the trickiest questions in digital photography, so we'll provide a short answer and a long answer.

Response: The short answer | The long answer