Nikon AF-S DX 18-200mm f/3.5-5.6G ED VR II Zoom Lens
Compared to Sigma DC 18-200mm f/3.5-6.3 OS HSM Side by Side
http://www.digitalreview.ca/content/Nikon-AFS-18-200mm-VR-II-compared-to-Sigma-DC-OS-HSM-zoom.shtml
Compared to Sigma DC 18-200mm f/3.5-6.3 OS HSM Side by Side
http://www.digitalreview.ca/content/Nikon-AFS-18-200mm-VR-II-compared-to-Sigma-DC-OS-HSM-zoom.shtml