Canon has introduced two new super-telephoto lenses, the EF 400 mm f/2.8L IS III USM and EF 600 mm f/4L IS III USM with significant weight reduction and high-image quality. While the EF 400 mm f/2.8L IS III USM received a weight reduction of over 25 percent, the EF 600 mm f/4L IS III USM is now lighter by 20 percent.
Both lenses feature two of Canon’s most advanced propriety lens technologies — Air Sphere Coating (ASC) and Super Spectra Coating (SSC), helping to reduce flaring and ghosting, and suppressing reflection of light, leading to vivid images. These updated lenses inherit the excellent overall build-quality and ruggedness photographers expect from the Canon EF L series of lenses. In addition, the minimum focusing distance has been improved for both lenses, from 2.7 m to 2.5 m for the EF 400 mm and 4.5m to 4.2 m for the EF 600 mm.
The new lenses also have received upgraded Optical Image Stabilization from three-and-a-half stops to five stops of correction over the previous f/2.8 lens, improved, flexible focus control with a customisable electronic-focus ring, two fluorite elements and one super UD element and heat-shielding paint among other improvements.
Both the lenses are scheduled to begin shipping in December 2018. While the Canon EF 400 mm f/2.8L IS III USM is expected to ship at an estimated retail price of $11,999, the EF 600 mm f/4L IS III USM carries an estimated retail price of $12,999.