The D4 is simply a refined D3S, with a smattering of features that may lure in new customers who passed over the D3S for one reason or another.

The Nikon D4 is a pro shooter's dream, with controls galore, and a big, bright optical viewfinder. This fully loaded full-frame D-SLR rattles off shots at a quick 10 frames per second, but all of this comes with a rather high sticker price and a steep learning curve.

This is a serious pro tool designed for the likes of sports and editorial photographers, and its many usability tweaks will ensure that every shooting situation is catered for.

Nikon has produced a solid workhorse of a DSLR that professionals can depend upon to deliver good results even in low lighting conditions. Image quality is high and results look great straight from the camera.

The Nikon D4 is a high-performance, high-precision tool which is quite obviously not for everyone. Along with its amazing high ISO low noise sensitivity, fast frames per second shooting rate and smooth handing, the D4 also comes with a monster size and a staggering price tag.