I own a D3s, a camera tips, especially through their speed and high - fully usable - ISO usability. However, there have been one or the other situation, where I came to resolution limits. The D3x was due to the low ISO, however, for me to limits in general use (Studio OK) and thus too expensive. Camera was ordered from Amazon and also come with a very short waiting time. The D800 with the 36 MP includes in fact a gap. One often reads that this camera a lot of enthusiasm for their brilliant resolution triggers, as well as loans and advances to the user provides. The sharpness is remarkable, however, the shutter speed must match. The dynamic scope is outstanding, transition from shadows in brightness are exceptionally good, colors are excellent, perhaps not quite as hot / glowing like the D3s, but this can be adjusted in the Custom Settings something to their own taste and save. Autofocus is excellent and fail even in unfavorable lighting conditions. I have tried various focal areas and dananch considered the enlargements, always the winner. No deviation. Here is also a challenge for the photographer is present when one sighted anything, it must match otherwise the earring hires the - female - sharp eye in the magnification. The extensions are simply a new league, especially in landscape photography. This has to be seen, otherwise you just can not believe it. LiveView should manually (with tripod use) control, since the extreme resolution makes the differences really visible, 'Spot on' or not is really an issue. The menu items in the camera are numerous, one tends to somehow make everything to 'ON' and to call it a day. However, it is worth even to read the BDA - specifically the Custom Functions - because so that the camera can be configured so that in everyday life - can be achieved really great results - with little time spent on individual setting. Some settings that are very helpful: ISO setting, I have programmed my D800 to ISO 100 and the automatic to 6400, making it the full usable area available (but it is still higher). There are, however, a very important feature to the BDA does not enter. You can choose on which calculation of personal emphasis is to be placed in the driving, on ISO sensitivity or fast shutter speed in this submenu. I am with the shutter speed is fast, since I thus can exclude uncleanness in magnification (which is a bar that can be moved with the cursor). Landscape photographer with tripod can do it the other way around program (then the selected ISO is kept as long as possible). Thus you get top results in the automatic mode without the need to spend a lot of time with manual changes (and sometime lose track).
A further useful menu item is that you can enter the number of trips during the self-timer and the time interval at this is to take place, eg 3 trips in 0.5s distance. This can be - automatically - connect with the bracketing, if it is enabled. So in my example, 3 self-tripping in 0.5s distance with 1x lower, zero and overexposure. 1 hit is now - on the fly - wherever you go. The FN key can be programmed individually, I have put the spot metering on. Can I find a good solution, because you can avoid settling of the camera so that to change the measurement by bike. Simply take a picture with the usual method of measurement, and then another - here - with spot metering. I find this very useful because very time-saving. Some individual settings, especially image processing go in computational process to the buffer memory. If you change that into consideration, it is possible that at high frame rate and high dynamic camera slowed the pace (you can tell when someone with a D3s is next to it). Because you should disable certain settings in advance. But if in the BDA explains. The memory card should be one of the better ones. Conclusion: In its context this is a camera that sets a new standard. With their individual features that are already very professional, the power 'take pictures' from the usual and enjoy it, again increased significantly. I quite often use a 85mm 1.4AFD, doing really well and with the current AFS 2.8 / 70-200 VRII This is a sensationally good combination. Video applications are highly useful, all in all, the camera is a real asset. The display is very sharp, in fact it is difficult to find the fly in the ointment, because you have to look for it. Negatives: This is subjective, the handling is compared to professional models something 'slightly', which are better in the hand (and this is of course dependent on the length of the fingers, as well as the size of the bolt-on lenses), the battery grip is very expensive and raises the weight ultimately about a D4.