Am I hearing things? Today I recv'd this Sigma 120-400mm 1:4.5-5.6 APO DG OS HSM lens with a Nikon mount. When in AF mode I can hear what I think are gears
Sigma 120-400mm f4.5-5.6 APO DG HSM - Lens – Kamerastore
Sigma 120-400mm f/4.5-5.6 APO DG OS HSM Nikon Fit Lens | eBay
LensCoat Lens Cover for the Sigma 120-400mm DG OS LCS120400SN
SIGMA SIGMA AF APO 120-400mm F4.5-5.6 DG OS HSM Nikon for Nikon F mount with ori | eBay
Amazon.com : Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics
Amazon.com : Sigma 120-400mm f/4.5-5.6 AF APO DG OS HSM Telephoto Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics
Sigma 120-400mm f4.5-5.6 APO DG OS HSM – Kamerastore
Best Buy: Sigma 120-400mm f/4.5-5.6 DG OS HSM APO Lens for Nikon AF Digital SLR Cameras 8557NIKON
Sigma 120-400mm F/4.5-5.6 APO DG HSM OS Lens For Canon EF-Mount {77} at KEH Camera