我想問下，買Nikon D2Xs，定係canon-1D Mark III，好呀？

Nikon D2Xs is older, while Canon-1D Mark III is newer ...
For functions, you can see the links below in English :)
Nikon D2Xs
http://www.dpreview.com/reviews/specs/Nikon/nikon_d2xs.asp
canon-1D Mark III
http://www.dpreview.com/reviews/specs/Canon/canon_eos1dmkiii.asp
One very special feature in D2X is that you have to really in focus to take a shot,
otherwise the shutter cannot release...
Nikon or Canon is a SYSTEM choice, like Christian or Buddism in religion ...
your preference ...
The above 2 cameras are not toy camera, very heavy for professional use,
and the focus system is extremely accurate ... and in magnesium metal case with weather seal ...