In thinking about the 7100s attributes compared to my current D800 with D7000 backup main kit, something came to mind: Might the 7100 be a great camera for high resolution landscape stitching?
It has fairly high resolution per shot, and should have very good per pixel sharpness without the AA filter. When attached to pro FX glass, unlike the 800, it will be making use of only the very best part of the lens, avoiding vignetting and most corner softness. I would think that a 15-30 shot stitch using a medium length prime lens could produce a heck of a lot of detail with good consistency across the frame.
..... you'd see any benefit..... if at all over your D800. You have a remarkable machine already.. I wouldn't trade it for a D7100. What you described could also be done with FX glass on your D800. (stitching). Unless you're going to print billboards .... I doubt you'd see a difference imho.
others may disagree.
Nikon AF - One Shot ..... One Kill
Oh, I wouldn't consider moving from D800 at all. I was simply speaking in abstract about a possible area it might excel. I had read in several posts people complaining that while on one hand the lack of an AA seemed to be suited for landscapes, that the lack of good wide angle glass on the other hand made the DX 7100 of limited use for that, which made me ponder the situation. Unlike some, I'm a huge fan of the D800. It's really impressed me shooting everything from weddings to street portraits to Formula One. Haven't had a change to shoot much landscapes with it yet unfortunately since I live in an ugly state, but that's about to change in Alberta.