Datacolor Spyder Checkr Datacolor Camera Solutions

200-400mm telephoto zoom with built-in 1.4x extender. f/4 aperture (f/5.6 with extender). 4-stop Image Stabilization (3 modes). Fast, quiet USM autofocus with manual override. Power Focus for smooth video focusing. Fluorite & UD elements for reduced aberrations. Fluorine coating for easy cleaning. Dust and water-resistant. Rotating tripod mount. Drop-in filter holder. Security slot.