Richard CanonNews / Thursday, September 6, 2018 / Categories: Lens Catalog Canon EF 400mm F2.8L IS III USM Specifications for the Canon EF 400mm F2.8L IS III USM Lens Category and Release Details Lens Mount TypeEF Lens CategorySuper-Telephoto Primes Launch DateSeptember, 2018 Initial Price$11,999.00 Lens Characteristics Diameter163mm Length343mm Weight2840g Filter Threadmm Rear Filter InstalledTrue WeathersealingTrue Focal Length400mm - 400mm Number of Elements / Groups13/17 Maxiumum Aperture2.80 Minumum Aperture32.00 Minumum Focal Distance2.50m Number of Diaphragm Blades9 Purchase Links for the Canon EF 400mm F2.8L IS III USM B&H PhotoVideo Adorama Product Highlights EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/32 Super UD and Fluorite Elements Super Spectra and Air Sphere Coatings Ring-Type Ultrasonic Motor AF System Customizable Electronic Focusing Ring Optical Image Stabilizer Weather-Sealed Design, Fluorine Coating Detachable, Rotatable Tripod Collar Rounded 9-Blade Diaphragm Previous Article Canon EF 600mm F4L IS III USM Next Article Canon EF-M 32mm F1.4 STM Print 1313 Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Please login or register to post comments.