Here's an interesting fact to mull over. The Canon EOS 1Ds Mk III will sell for £6,000, body only. For that, you can get a D3 body, one of the brand-new Nikkor 24-70mm f/2.8 N-series lenses and Nikon's fabulous 14-24mm N-series wide-angle zoom. Remember, the D3 is a full-frame SLR, so that 14mm zoom is so wide you'll be lucky to keep your ears out of the picture.

Both of these are professional lenses with the build and optical quality that goes with it. We were fortunate enough to get to try out the D3 and these two lenses for this review, and the combination is truly awesome.

The 1Ds Mk III has 21 million pixels. The D3 has 12 million pixels, which is not as many but still a lot. Some clients may demand 21-megapixel files, but how many? You have to weigh this against the D3's far lower cost (£2,500 lower) and certain other capabilities that the Canon doesn't have.

These include the fact that the 1Ds Mk III can shoot at 5fps, while the D3 shoots at 9fps. The 1Ds Mk III goes from ISO 100-1600, but the D3 goes from ISO 200-6400 (yes, 6400). Stuck with a bunch of APS-C format lenses from lesser cameras in the range?

If you've got a 1Ds Mk III, tough luck - you can't use Canon's EF-S lenses on this model. If you've got a D3, though, and you slot on one of your old DX lenses, the camera spots it straight away and switches automatically to a 'cropped' mode to give you 5-megapixel photos. It's not much, but it's a lot better than nothing, and handy for making long telephotos even longer, thanks to the 1.5x focal factor.

This is not an attempt to trash the 1Ds Mk III, but it's important to understand just what Nikon has achieved with with its new professional flagship camera. The Canon wins on resolution, and it's a no-brainer if you've already invested heavily in Canon gear. But what Nikon has produced is a camera good enough for West End fashion shoots and frantic goal-mouth action at 3pm on a sleet-soaked January afternoon.

Handling and controls

One of the things you're paying for with a professional camera is build quality, and the D3 doesn't disappoint. We've remarked on the new D300's cast-iron feel, and this camera is just the same. The finish, the fit of the panels, the feel of the controls - they're all first rate.

On the rear, you get the same 920,000-pixel LCD that appears on the D300, so the quality of the display is excellent. Below this is a 'tertiary' panel (there's a secondary panel on the top), which displays ISO, quality and white balance settings, with buttons underneath for changing them - the white balance icons are too small, though, and not so easy to see in bad light.

Memory cards slide in via a door in the back of a camera, which has a double-catch mechanism to prevent you opening it accidentally. Inside are two CF card slots - see the camera annotation for a description of how these work together.

The battery slides into the base of the camera, and according to the manual, the battery's good for 4,300 shots between charges. The camera comes with a dual charger so that you can top up your spare at the same time.