Fri 25-Jan-13 04:51 AM | edited Fri 25-Jan-13 04:53 AM by WildIsle
There's lots of threads discussing the merits of portrait lenses including this recent one
You can take a great portrait with just about any lens (although your spouse may balk at framing your latest fisheye creation!). But typically faster mid-range telephotos are looked at as the best focal length for pleasing facial perspective and shallow depth of field to blur backgrounds and highlight subjects, between 50 & 200mm give or take and ideally at least a f2.8 max aperture, going as fast as f1.8 or even f1.4.
$1000 could get you some great glass. If I were going to spend a grand for portraiture I'd probably buy a AF-S Nikon 85mm f1.8 G for $500 and a AF-S Nikon 50mm f1.8 G for $225. Once you add taxes that would probably take the lion's share of the budget but if there was any wriggle room I'd get little SB-400 Speedlight or a spare battery.
The other option would be to blow the whole budget on either a Nikon 85mm f1.4 D or either of the beautiful DC lenses: 105mm f2 DC or 135mm f2 DC which to keep in your budget would probably have to be used or a really good deal new. These older lenses don't autofocus with cheaper digitals (so far only the lower end DX bodies) but they have great build and have an almost cult like following. They would work beautifully on your Nikon FX body.
There you go - a few ideas to get you going... always fun to spend someone else's money