Richard CanonNews / Thursday, March 6, 2025 / Categories: Lens Catalog Canon RF 100-300mm f/2.8 L IS USM Specifications for the Canon RF 100-300mm f/2.8 L IS USM Lens Category and Release Details Lens Mount TypeRF Lens CategoryTelephoto Primes Launch DateApril, 2023 Initial Price$9,499.00 Lens Characteristics Diameter128mm Length323mm Weight2650g Filter Thread112mm Rear Filter InstalledFalse WeathersealingTrue Focal Length100mm - 300mm Number of Elements / Groups23/18 Maxiumum Aperture2.80 Minumum Aperture22.00 Minumum Focal Distance1.80m Number of Diaphragm Blades9 Purchase Links for the Canon RF 100-300mm f/2.8 L IS USM Amazon B&H PhotoVideo Adorama Previous Article Canon RF-S 55-210mm F5.0-7.1 IS STM Next Article Canon RF 28mm F2.8 STM Print 49 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.