http://www.nikonchat.com/nikkor-24-70-vr/

Sigma 24-70 or a macro lens?
hi, im wondering what lens should I get, I have a sigma 10-20mm and a Nikkor 18-200mm VR. and IM planning to sell my 18-200 and the Sigma 24-70 f2.8 exchange. or keep my Nikkor and buy a Nikkor 60mm micro? I make the landscape during the day.
I think the 10-20mm and is better than shooting, landscapes. To take photos of other wonders of nature, then the 60mm macro would also be an excellent addition to your team. The 18-200mm is better as an all-around, walk-around lens that is why I maintain and get the macro lens.
What is Focal Length?