Upload & Sell: Off
Do you own a D800?
I do. 36MP of image quality is fine, but the AF is slowish (I had a D3 before), the focusing screen is at best mediocre for manual focus in bright light, and I can miss focus by meters in darker situations, and I am someone who was able to nail the 80 Lux-R wide open on a 5D consistently, which many could not. The live view does line skipping, presumably because the processing load to do a full live view with exposure simulation is just too high, and while I can accurately focus via live view with line skipping, I sure miss those other lines. Many lenses are just not up to it, even lenses which were great on 24MP, and the focusing issues of the D800 compound with the focusing issues of older lenses. I was prepared for this and will maybe only sell one lens, but many were caught off guard.
So, no, I am not being negative, I am calling it as it is. The D800 is a great camera, but if I could have a 24MP D800 tomorrow, I wouldn't even hesitate one second.
carsten – none of those reasons really have anything to do 24mp versus 36mp. your're just saying you'd like the D800 to be a better camera not a better imager. i don't get why you would jump at 24mp D800? it would still have all those flaws except it wouldn't show off your lenses weaknesses quite as much. you should just set lightroom (or whatever you use) to zoom in to 66% instead of 100% when you click magnify and it will be like you have the 18mp camera you really wanted (won't help ergonomics any though).
i'm not unhappy with 24mp if it means better low light performance (not sure it actually does at like sizes) since i'd use the camera more in lowlight than for landscapes. i suspect 24mp might have been chosen for the rx-1 to reduce corner smearing and color shift issues that have plagued the NEX-7, or there is always the theory of the exclusiveness deal with nikon for some length of time with the 36mp sensor.
I think all or at least most of these would be fixed with a 24MP D800, as long as they actually tune the camera for the 24MP sensor, and don't just rip out one and shove in the other. The resolution is lower which presumably makes the optical viewfinder sufficient for accurate manual focus, like the D600 or D3x, except in mentioned dark situations. AF could be as fast as the D3x or probably faster. In fact the D800 initially focuses quite fast, but then kicks into a refinement stage, probably due to the high resolution, and "refines" for another short time. The line skipping could be removed, there is no 21MP or 24MP which needs that, including the D3x, and most decent lenses are good enough with the D3x.