Comments on: Opteka Tripod Collar Mount for the Canon EF 70-200mm f/4L USM, EF 300mm f/4L USM, & EF 400mm f/5.6L USM SLR Lenses

Comments on: Opteka Tripod Collar Mount for the Canon EF 70-200mm f/4L USM, EF 300mm f/4L USM, & EF 400mm f/5.6L USM SLR Lenses http://www.tampola.com/digital-cameras/canon-digital-cameras/opteka-tripod-collar-mount-for-the-canon-ef-70-200mm-f4l-usm-ef-300mm-f4l-usm-ef-400mm-f5-6l-usm-slr-lenses-21446.html http://wordpress.org/?v=2.9.2 hourly 1