This Telephoto Lens Provides High Quality Delineation Performance Without Compromises.

This lens features a compact, lightweight design that is about 70% in size and 50% in weight less than the 300mm F4 ED (IF) lens. This reduces the load on the photographer such as when walking of long distances is required to reach a shooting site. The lens features impressive delineation performance and uses extra-low dispersion (ED) glass for minimizing color blurring and providing sharp, high-resolution images with high contrast. Focusing can switch between AF/MF at the touch of a button, and an inner focus system is used to provide a speed AF option for providing superior ease of operation overall. A large hood with a PL filter operation window is also supplied.

Two extra-low dispersion (ED) glass lenses are used for correcting the chromatic aberration. This telephoto lens provides high quality delineation performance without compromises. When combined with the 645D, you can experience breathtaking resolutions with stunning clarity. When combined with the rear converter in bird or other wildlife photography, this lens can also be used as a 420mm F5.6 or 600mm F8 super telephoto lens. AF/MF switching can be performed quickly by simply moving a wide focus ring forward or backward. The lens includes a rotating tripod seat with clip to enable speedy switching between vertical and horizontal orientations.