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Canon RF 28-70mm f/2 L USM Lens
Key Features
Brand Canon
RF-Mount Lens/Full-Frame Format
Aperture Range: f/2 to f/22
Ultra-Low Dispersion Elements
Ring-Type Ultrasonic Motor AF System
Customizable Control Ring
Rounded 9-Blade Diaphragm
Key Features
Brand Canon
RF-Mount Lens/Full-Frame Format
Aperture Range: f/2 to f/22
Ultra-Low Dispersion Elements
Ring-Type Ultrasonic Motor AF System
Customizable Control Ring
Rounded 9-Blade Diaphragm
1 Year Warranty
Canon RF 28-70mm f2 L USM Lens
The Canon RF 28-70mm f2 L USM Lens is a historic, ultra-bright professional standard zoom lens engineered exclusively for the full-frame Canon EOS R mirrorless system. As a crowning achievement in lens design, it stands as the world’s first large-aperture full-frame standard zoom to offer a constant f/2 aperture. This revolutionary optic combines the versatility of a standard zoom with the extreme light-gathering speed and melting background isolation of elite prime lenses, rendering traditional lens swaps a thing of the past for wedding, portrait, fashion, and commercial creators.
Key Features
- World-First Constant f/2 Maximum Aperture: Delivers an unprecedented level of brightness and depth-of-field control for a zoom lens, offering identical light transmission and portrait isolation to high-end prime optics across its entire range.
- Prime-Lens Optical Resolution: Engineered to deliver staggering sharpness, micro-contrast, and color fidelity that rivals top-tier fixed prime lenses, even when shooting completely wide open at f/2.
- Ring-Type Ultrasonic Motor (USM): Combines Canon’s powerful ring-type USM drive with specialized autofocus algorithms and a high-speed CPU to ensure fast, highly accurate, and near-silent tracking autofocus.
- Elite L-Series Glass Architecture: Comprises 19 elements in 13 groups, packed with four aspherical glass elements, two Ultra-Low Dispersion (UD) elements, and one Super UD element to thoroughly crush chromatic and spherical aberrations.
- Air Sphere Coating (ASC) & Subwavelength Structure Coating (SWC): Advanced multi-layered anti-reflective structures significantly suppress internal reflections, neutralizing lens flare and ghosting when working directly in harsh backlit environments.
- 9-Blade Circular Aperture Array: Produces exceptionally smooth, creamy background blur (bokeh) and completely rounded out-of-focus highlights to elevate high-end portraiture.
- Configurable Control Ring: Features a physical control ring near the front of the barrel for direct, tactile adjustment of core exposure parameters like aperture, ISO, shutter speed, or exposure compensation.
- Heavy-Duty Weather-Sealed Chassis: Fully sealed at all critical moving gaps, switches, and rings to reliably protect against extreme dust, moisture, and inclement field weather.
- Fluorine Outer Glass Protection: Applied to the front and rear outer lens elements to repel water droplets, dirt, and fingerprints, allowing for rapid, scratch-free maintenance on location.
- Full-Time Manual Focus Override: Provides immediate manual focusing adjustment even while in autofocus mode, without needing to flip a physical toggle switch.
Technical Specifications
- Focal Length: 28 to 70mm
- Maximum Aperture: f/2
- Minimum Aperture: f/16
- Lens Mount: Canon RF
- Format Compatibility: Full-Frame
- Angle of View: 75° to 34°
- Minimum Focus Distance: 39 centimeters (1.28 feet)
- Maximum Magnification: 0.18x (at 70mm)
- Optical Design: 19 Elements in 13 Groups
- Diaphragm Blades: 9, Rounded
- Focus Type: Autofocus
- Image Stabilization: No (Integrates with In-Body Image Stabilization on compatible EOS R camera bodies)
- Filter Size: 95 mm (Front)
- Dimensions (Diameter x Length): 103.8 x 139.8 millimeters (4.09 x 5.50 inches)
- Weight: 1430 grams (3.15 pounds)
Camera System Compatibility
The Canon RF 28-70mm f2 L USM Lens provides complete native integration across the entire Canon EOS R mirrorless lineup. It pairs optimally with high-performance, robust full-frame camera bodies—such as the EOS R5 series, EOS R1, and EOS R3—where its heavy weight balance and extreme resolving power are beautifully sustained. When attached to APS-C format sensors (such as the EOS R7 or EOS R10), it utilizes the center portion of the glass to yield a crop-factored 35mm equivalent focal length of approximately 45–112mm, acting as a highly unique, ultra-bright telephoto portrait zoom lens.
