Re: Canon unleashes the EOS 5D Mark III
There is no doubt that Canon and Nikon are the two market leaders, particularly when it comes to full frame DSLRs. Historically they seem to leapfrog each other, taking turns to have "the edge." This can result in users bouncing from one brand to the other, but taking into account changing lenses and accessories every time a switch is made it does become very expensive and counter productive. Each switch comes with a period of adjustment and familiarization for the photographer as he/she gets to drips with a new system.
I keep thinking that the pixel race must be over but the manufacturers do like to prove me wrong. Even so, I'd be surprised if many photographers deserted Canon for Nikon on the strength of 36mp v 22mp. The difference is approximately a 25 inch print at 300ppi without resizing instead of a 20 inch print, but in practice the Canon should easily manage a 36 inch print and the question then becomes just how big do you need to go.
This could even backfire on Nikon; performance of the D800 has yet to be tested and with 36mp noise may well be an issue at high ISO compared to the 5DMkIII. Also the frame rate at full resolution is significantly slower and potential Nikon owners who want a faster camera with better high ISO may feel pushed towards the D4 which is seriously more expensive than a 5DMkIII. If I understand correctly, the D800 does have a crop sensor mode that allows a faster shooting speed but that does seem counter productive on a full frame camera.
One feature of the new Nikon that makes it very interesting to photographers who don't need speed but really do need to produce huge images with maximum sharpness and detail, is that a D800E version will be available without a low pass filter, normally included to prevent moire. This may make it very attractive to studio or landscape professionals.
For me, personally, it is all very theoretical; 12mp is more than enough!
A photograph is more than a record of what you see - it's a window to your soul