What lense with Sigma SD14?

[Nautilus]

I plan to get a Sigma SD14, any advise on what lens i should get? Am thinking of something like the Nikon 18-200mm f/3.5-5.6G ED IF AF-S DX VR Wide Angle Telephoto Zoom.

Thank you very much.

[Nautilus]

Oh, found this Sigma Lens, Sigma Zoom Super Wide Angle 18-200mm f/3.5-6.3 DC OS (Optical Stabilizer) Lens (Nikon F).

Any comments on this lense?

I like to take pictures of nature scenery, animals from a distance and colourful buildings.

Thank you.

[faisal]

I use the Sigma 18-200mm on my Canon. Its not a brilliant lens but gets work done for me as a single lens solution though if you don't mind changing lens then I'd ask you to look at some other lens.