Pros Full frame 35mm size sensor.
Cons None that I can see
Summary Your comparison camera in Canons should have been the EOS 5D, which is a lot closer to the price and specifications of the Nikon D3 than the 1Ds Mark 3. I have a Canon 5D and it is a fairly good camera let down badly by average quality lenses.
I have been a professional photographer for 40 years and have always found Nikon lenses to be far superior to Canons.
I will be changing over from the Canon to the Nikon D3 and Nikon/Nikor lenses as soon as I can, as I require a full 35mm frame sensor camera.
Pros Image quality as good or better than Canon champ 5D. Autofocus better than best canon 1dmk3. Dynamic range without peer. Low light capability the best ever except for its sister camera the D700. Only cedes landscape photography to the 1dsmk3.
Cons Big and heavy. AF occasionally roams in low light using edge sensor points.
Summary As of 9/2008 the best DSLR money can buy.
"After 30 days of shooting with my Nikon D3 im still in love, but a few cracks may be entering."on by sofuscomer
Pros Fantastic Speed, True colours, Great and crystalclear 922.000 pixel screen, and Great High ISO performance.
Cons Ghostly effects on Tele, Unsupported unfinished Capture NX software, And hard to get for some.
Summary I was one of the lucky to get my Nikon D3 on November 30th, with a 14-24mm and a 24-70mm.
First hand impressions where pretty good coming from Canon Mark IIN. The viewfinder is great and thats important. Next one thing that Nikons seems to rule out of their promotions is the beautiful colours rendered. I havent seen such great reds before.
The fullframe is so great to see again. Its the first DSLR camera to deliver filmlike files. With the charms and nocharms of old fullframe filmcameras. I love it due to reportage and soft corners. But for high precision shooting with clear edges, i would stay canon with a crop factor of 1.3
ISO performance is awesome. Hello 3200 ISO and even hello 6400 for a few assignments.
The higher the ISO the less sharp images of course, but i have never seen this on any kind of camera and its really usefull and has opened up my eyes for nonflash dim lighted photography.
But somehow i feel very uncertain using Nikons 70-200mm 2.8 VR with the NIKON D3. The higher the Focal Length the more ghostly blur its seems to gather. I have submitted files indicating this to Nikon, but it seems that they rather busy with producing for the large number of unfortunate people who havent recieved yet. So maybe its a firmware issue or i was unlucky buying a faulty 70-200 2.8 VR. Can´t say more than that.
I use lightroom, but do have the commercial license of Capture NX 1.3 which was in the Box for the first NIKON D3 owners. Its unfortunate that the latest version 1.3 isn't supported on MAC OSX 10.5 and NIKON warns users from using it on LEOPARD cause it can ruin your files. So a month later still no working software for MAC users. It seems like they are more busy than good is.
Finally i must say that Nikon has created a great new camera, which i don´t regret 3 seconds buying. I just hope that the ghostly effects will be fixed in future firmware releases and that everybody waiting for theirs soon get it. Nikon created a huge demand, but really are behind with delivery, which is semi pro marketing in my mind.
Kind Regards Sofus Comer, www.scomer.dk
Pros Hi ISO capabilities, full frame camera. LiveView is awesome
Cons not inexpensive.
Summary Fantastic camera, Wide is Wide again. Full frame with wide lenses is nice to have once again. Hi ISO for low light shooting or getting fast shutter speeds with slower lenses works well. LiveView is easy to use and very useful.
Pros No visible noise at high ISO's
Cons Bulky. Long waiting list
Summary This is the best camera I have used/owned to date. It has a lot of little features built in to encompass a wide range of requirements to make your life easier and focus on shooting.