[Pavel]

As you know, I am thinking of replacing my Nikon D300. In a short-term (now to 4 - 5 years or so), I plan to stay mostly with Nikon line, as i have a significant investment in lenses. In a longer term (2-3 years from now) , I am planning to slowly build a a smaller mirror-less system with a handful of small primes. Nikon D800 is a part of the first phase. I like the fact that it can use the DX lenses in a cropped mode, offering nearly 16 mpixel resolution. I also have some full frame lenses (teles and normal) and I would have to get either a 21mm (Zeiss) or perhaps 14mm and 35 mm from Samyang to have a pretty complete full frame system.

My concern is whether I will get appreciable improvement in light sensitivity and dynamic range over my current camera. Clearly I will get a massive improvement in resolution (3x 12 mpixel to 36mpixel). I am not sure how much actual improvement in image quality will I get, as I am not sure my lenses will keep up with the resolution. (Sigma 200 macro, Nikon 105 mm macro (AF model), old Nikon 50 mm 1.4 and Nikon 70-300)

I would appreciate any views before I jump. This is the most jump-ready I have been for a long time. My camera is now 5 years old (I believe) and I would like to have something new. However, I do not know what the Nikon D400 will be like, if it will ever see the light of day.

Pavel