That being said, I am blown away that the D4 comfortably shoots up to a 12,800 ISO; I've even shot up to the H2 setting...granted, it's fairly grainy, but it is close to the equivalent of what 3200 ISO on the D300 was.

In the past few years Nikon has deservedly gained a reputation for manufacturing DSLRs with excellent ISO performance and the D4 is no exception.

Indeed, we’d even go so far as to say that the D4 offers slightly better ISO performance than the D3s – primarily on account of being able to offer the same high level of noise control while simultaneously offering more resolution.

Nikon has released the WT5 dongle to coincide with the launch of the D4 which will cost £649 and will allow you to control your camera remotely from an iPhone or iPad, giving you control over a huge range of settings including the ability to click on the screen to move the focus point, change the ISO sensitivity and focus type.

While 2010’s Nikon D3s – with its even greater ISO range of 102,400 – may have provided an update, the D4 takes the range into new territory altogether, improving the specification of the D3s in just about every area possible.

That said the extended limits of the D4’s ISO range should only be used as a last resort, even though it’s certainly comforting to have them to hand should you really need them.

And the D800 delivers equally good or better photos at low ISO sensitivities and better video quality for a lot less money, even when equipped with a battery grip, though the D4 remains seriously faster.

And just as the 1D X offers an extended 14fps ‘High Speed’ (JPEG only) burst mode so the D4 also offers an enhanced 11fps option – although in order to gain the extra frame the camera does have to lock focus on the first frame in the sequence.

The D4’s movie capabilities offer a big step-up over the D3s in terms of quality and features.

For wildlife photography I will probably stick with my D7000, since the crop factor helps to extend the reach of my telephoto lens, and I'm not sure I would travel with the D4 because of its weight, but when I want to produce the best images I can for fine art and portrait work, this is definitely the tool for the job.

That said I was still very impressed with how nicely the D4 captured the subtle coloration of wild flowers in some recent shots.

The D4 has made me a better action sports photographer.

I don't think I'd have the incredible colors, sharpness, and size, if it weren't for the advanced D4, and 11fps.

It is great in low light and aprox 11 frames per sec which is great when doing an action shootI love the display that is larger then the d3s.

Without question the D4's photo quality is excellent, with a great noise profile.