Sigma 17-50 Sigma 17-50mm f/2.8 EX DC OS HSM Lens for Nikon D3200
Review: Nikon D7000 – Nikon's Best DX Camera
Best Buy: Sigma 17-70mm f/2.8-4 DC Macro OS HSM C Digital Lens for Select Nikon DSLR Cameras Black 884306
Sigma 17-70mm F2.8-4 DC OS HSM Contemporary Lens with UV, CPL, FLD, ND4,+10 Macro Filters and Bundle for Nikon D7100, D7000, D5300, D5200, D5100, D3300, D3200 and D3100 Digital SLR Cameras -
Review: Sigma 17-70mm f2.8-4 DC Macro OS HSM (Nikon F Mount) - The Phoblographer
Nikon D7000 + Sigma 17-70mm F2.8-4 DC Macro OS HSM | C sample photos - ExploreCams
Nikon D7000 with Sigma 17-70, f 2,8-4 HSM samples - YouTube