Summary: It is hard to describe the D4 without superlatives. This large professional DSLR has a full-frame 16 megapixels sensor which reaches a class-leading ISO 204,800 and can shoot continuously at 11 FPS for over 15 seconds. Image quality from the Nikon D4 is among the very best in all areas. Image noise is extremely low and dynamic-range is exceptionally high.
Pros: Class-leading image noise, Superb dynamic-range, Ultra-fast autofocus, Very fast continuous drive with deep buffer, Extremely fast and responsive, Ultra-short black-out, Good color-accuracy, Flexible self-timer and exposure delay, Highly customizable with plenty of controls, Dual memory cards can provide instant backup, Superb build quality, Manual focus assist direction indicator
Cons: Poor Automatic WB in low-light, Overly soft JPEGs, Bizarre, Poor Live-view, not, Exposure Delay, Indistinct ISO button, Rather bulky, No 16:9 guidelines for time-lapse, Asymmetric memory card types
Summary: The Nikon D4 is built on the rock solid DNA of the D3 (and D3s). While it doesn't offer many ground breaking upgrades from the D3s, the changes that have been made on the D4 make this camera stand out on its own. The sub-selector joysticks are new, as is the ergonomic redesign of the battery grip, making the D4 a lot more comfortable to use in portrait orientation.
Pros: Burst mode of 10 fps, Built for rugged use, Extensive weather sealing, 51-point AF system is very effective at tracking subjects and low light performance, Great high ISO performance, Best video quality we have seen so far
Cons: Battery life reduced to just 2200 shots, Quite heavy. Will require a rig for stabilizing when shooting video, Pricey
Excerpt: The Nikon D4 has some fairly big shoes to fill. Its predecessor, the 12.1-megapixel Nikon D3S was a veritable low-light killer, capable of shooting crisp images even in poor lighting without a flash.
Summary: Whenever a new piece of top-level gear comes along, there’s a rush by many pros (and more than a few amateurs) to get it right away. While the D4 does outshine its predecessor in many ways, we would not call it an essential upgrade for still shooters who already have a D3s. If more resolving power or the 1-stop improvement in noise control mean a lot to you, then it could make sense to upgrade from your D3s.
Conclusion: Four years ago, the D3 was revolutionary as a sports/action still-image DSLR . It was the first Nikon SLR that has more than 11 AF points, and it made a big jump to 51. The D3’s high- ISO capability was amazing compared to that from its predecessors the D2H/D2X. Concerning its still-image capture abilities, the D4 is more an evolution with slightly improved AF and essentially the same high- ISO capability as the D3S with a modest increase in pixel count, plus a lot of...
Excerpt: Faster, smarter, and more lust-worthy than ever, the Nikon D4 ($5,999) is the culmination of a carefully chosen list of features and enhancements, leaving what works and adding what’s needed for the latest in a long line of full-frame (FX) pedigree pro cameras. That’s something you do when your flagship camera is considered by its zealot users — people who carry out their work in places like the battlefield and space — to be an extension of their bodies.
Excerpt: The D4 is Nikon's new flagship DSLR camera, and represents the highest evolution of Nikon's speed and ISO technology. We go in-depth with the camera to review what's new, and what's been improved, in what is easily one of the best digital cameras in the world today.
Pros: Low noise at ultra-high ISOs, Fast frame-rates for action, Fast and accurate auto-focus, Improved handling and comfortable grip
Cons: ISO performance only slightly cleaner than D3S, XQD card-slot forces users to upgrade
Conclusion: 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.
Pros: Full frame sensor. Every physical control you could ever want. Integrated vertical grip. Shoots at 10 frames per second. Very low image noise. Uncompressed 1080p video output.
Cons: Big and heavy. 16-megapixel resolution. Only one CF card slot.