Richard CanonNews / Friday, March 7, 2025 / Categories: Lens Catalog Canon RF 28-70mm f/2.8 IS STM Specifications for the Canon RF 28-70mm f/2.8 IS STM Lens Category and Release Details Lens Mount TypeRF Lens Category Launch DateSeptember, 2024 Initial Price$1,099.00 Lens Characteristics Diameter77mm Length92mm Weight495g Filter Thread67mm Rear Filter InstalledFalse WeathersealingFalse Focal Length28mm - 70mm Number of Elements / Groups15/12 Maxiumum Aperture2.80 Minumum Aperture22.00 Minumum Focal Distance0.27m Number of Diaphragm Blades9 Purchase Links for the Canon RF 28-70mm f/2.8 IS STM Amazon B&H PhotoVideo Adorama MTF Plot of the Canon RF 28-70mm f/2.8 IS STM Lens Construction Diagram of Canon RF 28-70mm f/2.8 IS STM Previous Article Canon RF-S 3.9mm F3.5 STM Dual Fisheye Next Article Canon RF 70-200mm F2.8 L IS USM Z Print 145 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.