Canon 10-22mm or Canon 17-40L are both about 1k.

I went for the 17-40, 10-22 is next as its brilliant.

Dont be tempted by the sigma 10-20mm, its not great. You could always pickup a 17-85 IS USM cheap off someone else who is upgrading. This lens is quite decent, its not as good optically as the 10-22 or 17-40 though. Range is great and Image Stabiliser is handy.

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betty banger