"" If you attach a DX format lens a box appears in the viewfinder to indicate the cropped area (rather than the grey mask used on the D3). Optionally you can also manually select the shooting format (FX: 36 x 24 mm or DX: 24 x 16 mm - the 5:4 format has been dropped from the D700). Since the speed advantage of the DX crop format has been lost there seems little point using it unless you're actually using DX lenses. "
I can't help you on the lens question itself. The lens is a critical part of the camera and I can't fathom buying such an expensive camera and not knowing what to put in front of it. Besides, I can't afford such a beast so I don't have any first hand knowledge. I just found it strange that you said you can't use the DX lens so I had to investigate.
I guess I should have chosen my words better. What I should have said was that I can't use the DX lenses and get the most out of the D700 camera. I can use a DX lens on the D700 but it greatly reduces the capabilities. From what I've been able to learn about DX vs FX the focal length doesn't change between DX and FX, but what does change is the Field of View and the number of pixels the camera can record. When the camera is set to DX mode, the FoV is less than it would be in FX at a set focal length by a certain factor. For example, In FX mode I can get up to 12Mpx+ out of the D700. In DX mode I'll get about half that no matter how you cut it. If I shoot in FX mode with the intention of cropping I will still get 12MPx+ max on the file, but if it's a DX lens in FX mode then about half of those pixels will be unuseable due to edge softness and vignetting. As for buying a camera as wonderful as the D700 without knowing what to put on the front - good point - it was an extremely generous gift for a very enthusiastic (but not terrifically knowledgeable) photographer. I do appreciate your research. I plan to use my DX lenses as much as I have to but in the meantime I am scouting out the best FX lenses to buy when I'm able to replace my DX equipment.
If you can spend more than $1k per lens then there are new Nikon FX lenses out but I don't know how they behave.
Save your money buying a new so called "FX" lens. There are hundreds of the older Nikon "AF" lenses on the market which are just as good (if not better) than the new "FX" lenses and at 75% to 80% less cost. The reason for the lesser cost is that since they were originally made for the 35mm film camera, and are not considered for the "DX" format cameras, many people also don't consider them for the new "FX" format cameras. The market is flooded with these perfectly usable Nikon "AF" lenses.
Sorry to take so long to respond but I just saw your post. Do you have some AF lenses that you might recommend? I'm especially interested in a good "walk around" lens that would come in handy when I don't have the ability to do a lot of lens changes.
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