
As far as I know, 1Ds is used more for sports with its 10fps burst speed, while the 1D is better suited for general photography. I could easily be wrong though.
Both have great autofocus systems though, and are built like fighter jets![]()
Going back to the original question/s......
As others have said the full frame versions are the 1DS series whilst the 1D series are 1.3 crop.
Whilst the 1.3 croppers are great for sport and wildlife there's certainly no reason why they can't be used for landscapes. There's a lot to be said (with the right lenses) for the build quality and weather sealing that makes them great for the great outdoors.
The only problem with the 1D cameras is they don't do very wide angles, due to their reduced field of view, and they don't take EF-S lenses (though some people modify the EF-S 10-22m and make it fit/work, kind of).
But as long lens action cameras, they're pretty much peerless.
you could hammer nails in with them.
Only with an L series long lens though, the body is just too big to use anything less than 200mm as a handle.
I've a 1DMk2, it will do anything you want of it. Later D (not Ds) versions -
2N - better camera a good upgrade, handles better etc, IQ about he same
3 - in some people's eyes not much of an IQ upgrade, not much better in terms of AF etc
4 - best of the bunch BUT can be time consuming to set up AF the way you want it (or so I'm told).
Ds - much like the 5D, it will do motorsport but it wasnt designed with that as its primary capability, still a damn fine camera though.
Matt