Yep, you're right. First it's not 1:1 macro but goes to 18cm close-up at 1:2.7. 18cm from the focal-plane, that is. So substract the depth of the cam-body (4cm) and the length of the lens (8cm) and you end up having only 6cm air between the front-lens and your subject...
So if you already have 18-55mm (nice if you could list your gear in the signature, so everybody knows) are you looking for something wider or something with larger aperture?
In the first case go for the Sigma 10-20mm reviewed here
. Or the Canon 10-22mm if you have the dosh...
In the 2nd case the Sigma's I suggested in my earlier post are viable alternatives, although the 20-40mm is an older design seldom found today in the shops, the 18-50mm/f2.8 EX DC macro being the successor.
Thomas (beware: Nikon-fanboy and moderator!) My Lens Reviews
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