Canon RF 28mm f/2.8 STM Lens (Canon RF)

Canon RF 28mm f/2.8 STM Lens
The Canon RF 28mm f/2.8 STM is an exceptionally lightweight, affordable, and close-focusing pancake-style prime lens designed natively for Canon’s full-frame RF-mount mirrorless digital cameras. Boasting an ultra-low profile footprint, this classic wide-angle lens serves as the definitive walkaround tool for street photography, travel, vlogging, and daily snapshots. Combining a bright f/2.8 maximum aperture with advanced aspherical corrective optics, a customizable lens control ring, and an agile stepping focus motor, the RF 28mm packs superb imaging performance into a chassis so flat it essentially transforms your camera body into a pocketable companion.

Ultra-Low Profile Pancake Design & Optical Clarity
Sleek Pancake Form Factor: Features an incredibly flat, pocket-friendly design that dramatically reduces the physical footprint of your camera setup, allowing for highly discrete street shooting and effortless travel portability.

Versatile Multi-Format Coverage: Delivers an everyday 28mm wide-angle perspective on full-frame mirrorless sensors. When mounted onto an APS-C size R-series camera body, it provides a highly practical 45mm full-frame equivalent field of view, functioning as a natural, normal-length prime lens.

Bright f/2.8 Aperture Yield: Excellently matches working in available ambient light conditions while offering beautiful control over your depth-of-field layers to smoothly separate subjects from their background context.

Three Aspherical Glass Elements: The optical layout integrates three high-precision aspherical elements to actively suppress geometric distortion and spherical aberrations, maintaining uniform corner-to-edge sharpness and clean rendering.

Super Spectra Element Coating: Individual glass elements feature multi-layered Super Spectra coatings to minimize internal surface reflections, ghosting, and lens flare, ensuring rich image contrast and high color fidelity when framing in strong light.

7-Blade Diaphragm: Built with a circular seven-blade iris configuration that contributes to a pleasing out-of-focus background quality (bokeh).

Quiet STM Autofocus & Customizable Control Ring
Gear-Type STM Stepping Motor: Outfitted with an agile gear-type STM stepping focus assembly that provides fast, precise, and near-silent autofocus performance. This smooth tracking transit is highly optimized for filming video as well as lock-on still photography.

Close-Up Composition Focus: Features a short 9.1-inch minimum focusing distance coupled with a 0.17x maximum magnification ratio. This close-range configuration allows you to capture unique, intimate close-up details while retaining the expansive depth-of-field characteristics of a wide-angle perspective.

Programmable Lens Control Ring: Features Canon’s tactile, programmable lens Control Ring built directly onto the forward barrel. This ring can be configured to adjust a variety of exposure parameters directly from the lens shell—including aperture settings, ISO sensitivity, or exposure compensation—for efficient, muscle-memory handling.

Technical Specifications
Focal Length: 28mm (45mm Full-Frame Equivalent on APS-C Sensors)

Maximum Aperture: f/2.8

Lens Mount Type: Canon RF Mount (Full-Frame Native)

Filter Thread Diameter: 55mm (Compatible with the separately available EW-55 threaded lens hood)

Minimum Focus Distance: 9.1″ / 23 cm

Maximum Magnification Ratio: 0.17x

Lens Optical Formula: 8 Elements in 6 Groups (3 Aspherical Elements)

Autofocus Motor: Gear-Type STM Stepping Motor

Diaphragm Blades: 7

Weight: Approx. 4.2 oz (120 grams)