Canon RF 28-70mm f2.8 IS STM Lens

• Constant f/2.8 Maximum Aperture: Maintains a bright f/2.8 exposure value across the entire zoom range, enabling faster shutter speeds in dark conditions and smooth background separation.
• Ultra-Compact Retractable Body: Employs a mechanical twist-to-extend design that collapses the lens barrel down to just 92.2mm in length when stowed, saving substantial space in camera bags.
• Up to 5.5 Stops of Optical Image Stabilization: Built-in optical IS delivers up to 5.5 stops of shake correction, scaling up to an exceptional 7.5 stops of coordinated stabilization when paired with an EOS R camera body featuring In-Body Image Stabilization (IBIS).
• Leadscrew-Type Stepping Motor (STM): Driven by a high-precision, rapid, and near-silent linear STM autofocus drive that provides smooth focus tracking for stills and handles video transitions with minimal focus breathing.
• Featherweight Form Factor Optimization: Weighing only 490 grams, it stands as a nimble everyday carry option that balances easily on smaller, travel-friendly motorized gimbals.
• Advanced Optical Array: Comprises 15 elements in 12 groups, including two Ultra-Low Dispersion (UD) elements and two glass-molded aspherical elements to sharply suppress color fringing and geometric distortions.
• Super Spectra Coating: Applied to individual lens surfaces to eliminate internal glass reflections, systematically preventing lens flare and maintaining high contrast when tracking backlit horizons.
• 9-Blade Circular Aperture Array: Produces beautifully soft, rounded out-of-focus background highlights and clean bokeh fall-off to isolate subjects cleanly.
• Dual-Function Focus/Control Ring: Integrates a single customizable physical ring on the lens barrel that handles tactile manual focus adjustments or manages on-the-fly exposure settings like ISO, aperture, or exposure compensation.
• Dust and Weather-Resistant Seals: Features pro-leaning weather sealing around the rear mount and critical gaskets to reliably protect against moisture and environmental risks during field deployment.
• Impressive Macro Close-Focusing: Achieves a minimum focusing distance of just 24 centimeters with a 0.24x magnification ratio when utilizing manual focus at the 28mm end, capturing dynamic wide-macro perspectives.

Technical Specifications

• Focal Length: 28 to 70mm
• Maximum Aperture: f/2.8
• Minimum Aperture: f/22
• Lens Mount: Canon RF
• Format Compatibility: Full-Frame
• Angle of View: 75° to 34°
• Minimum Focus Distance: 27 cm (AF) / 24 cm (MF) at 28mm
• Maximum Magnification: 0.24x (at 70mm)
• Optical Design: 15 Elements in 12 Groups
• Diaphragm Blades: 9, Rounded
• Focus Type: Autofocus
• Image Stabilization: Yes (Optical up to 5.5 Stops / Coordinated up to 7.5 Stops with IBIS)
• Filter Size: 67 mm (Front)
• Dimensions (Diameter x Length): 76.5 x 92.2 millimeters (3.01 x 3.63 inches) Retracted
• Weight: 490 grams (17.3 ounces)

Camera System Compatibility