Following in the footsteps of such a successful lineage of professional SLRs isn't easy. Fortunately, the Nikon D4 offers enough important features like Ethernet and wireless connectivity, plus a huge improvement in video to make the upgrade very worthwhile.
The D3S wasn't particularly difficult or cumbersome to hold, but the D4 has received some fine-tuned ergonomic improvements to make the shooting experience even more enjoyable.
A thermal shield at the top of the camera protects the panel from heating up when used extensively outdoors — something that sports photographers will welcome. There's also an auto-dim sensor on the side of the (3.2-inch, 920,000-dot) LCD screen that detects the ambient light, and can automatically adjust screen brightness. The screen is very easy to see outdoors. There's also a new addition of a special gel layer between the plastic and the LCD itself to prevent fogging during temperature shifts.