As are many others in these forums, I am looking for your expert input regarding choice of equipment. I fully understand the physics regarding sensor size, pixel count, and photosite size as they relate to IQ i.e. noise and resolution. Although I have been keeping current on the latest discussions, I find that I am unable to come to a decision regarding purchasing the D7100 DX (assuming user experience is good), or another FX body.
Here is my situation. Among other bodies, I have a D2x, and a D700 which is my primary body at this time. I have a mix of DX and FX glass. I intend to sell my present DX bodies and purchase a new body to backup or at least compliment my D700.
My widest lens at this time is the DX Nikkor 12-24 which may or may not work on my D700. I have a Nikkor 300 f2.8 and a Nikkor 600 f4.0, which I use when out to shoot wildlife, and which accept some of the numerous TCs I possess. However, these two beasts are too much to carry around when hiking along trails to shoot landscapes. Thus, my longest carry-around glass right now is the FX Nikkor 70-300 f4.5-5.6, which doesn't accept Nikon TCs.
I'm sorry for being so verbose, but after all that, here is the question: Do I opt for a D7100 24mp, which gives my the DX 1.5 crop factor plus the option to use the additional 1.3 crop factor giving me extra reach and a higher resolution image even at the larger crop factor than I can get with the D700 12mp, and without the need of the use of TCs (I frequently print at 19x13), but sacrifice the wide angle range, or do I go with another FX body and purchase a Nikkor such as the 17-35 f2.8 or the 16-35 f4 VR? The f2.8 max aperture is not essential, the VR would be nice, and the price differential is substantial. Budget is a major consideration.
Again, I apologize for the length of this post, but is the best I could do to explain my predicament.