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Rent NowCanon RF 50mm f/1.8 STM Lens
Ultra-Compact, Lightweight Nifty Fifty Prime for Full-Frame EOS R Cameras
The Canon RF 50mm f/1.8 STM is a remarkably sleek, pocket-sized normal-length prime lens designed natively for Canon’s full-frame R-series mirrorless digital cameras. Reimagining the legendary “nifty fifty” focal length for the modern RF mount, this versatile everyday walkaround lens delivers a natural perspective that closely mimics the human eye.
Outfitted with a bright f/1.8 aperture for exceptional low-light flexibility, a whisper-quiet stepping motor, and a customizable control ring, this compact powerhouse is engineered to be the ultimate addition to any camera bag—delivering sharp resolution, beautiful background separation, and effortless travel portability.
Bright f/1.8 Aperture & Optimized RF Optics
Classic 50mm Normal Perspective: Tailored for full-frame Canon RF-mount mirrorless systems to serve as a highly flexible daily storytelling tool, making it ideal for street photography, environmental portraits, food documentation, and low-light snapshots.
Bright f/1.8 Maximum Aperture: A fast f/1.8 opening ensures excellent light transmission when shooting indoors or at twilight without relying on high ISO settings. This wide aperture yields a shallow depth of field, allowing subjects to pop against a heavily blurred background.
Precision-Molded (PMo) Aspherical Element: The optical design incorporates a specialized precision-molded aspherical glass element to actively suppress geometric distortion and spherical aberrations, ensuring crisp center-to-edge sharpness and accurate subject rendering.
Super Spectra Anti-Reflective Coating: Individual glass elements are treated with Canon’s proprietary multi-layer Super Spectra coating to minimize surface reflections, ghosting, and lens flare. This preservation layer keeps image contrast rich and color profiles neutral, even when working in harsh backlit or direct sunlight environments.
Rounded Seven-Blade Diaphragm: Outfitted with a 7-blade circular aperture array that yields a smooth, soft, and visually pleasing background blur (bokeh) for selective focus techniques.
Silent STM Autofocus & Customizable Control Ring
Smooth, Fluid STM Stepping Motor: Driven by an optimized STM stepping motor that delivers fast, accurate, and whisper-quiet autofocus tracking. The exceptionally smooth, near-silent focusing performance is perfectly tuned to meet the needs of modern on-camera microphone video production.
Full-Time Manual Focus Override: Supports immediate, full-time manual focus fine-tuning simply by rotating the focus ring at any moment during active operation, bypassing the need to navigate camera body menus.
Configurable Lens Control Ring: Features a physical, programmable control ring directly on the lens barrel. This ring can be mapped via the camera menu to provide tactile, intuitive adjustment over critical exposure variables, including ISO, aperture values, shutter speed, or exposure compensation.
Ultra-Slim Travel Configuration: Exceptionally compact and featherlight footprint makes it easy to keep mounted to your camera body full-time, slipping effortlessly into small daily cross-body bags or jacket pockets.
Technical Specifications
Lens System Classification: Ultra-Compact Standard Normal Prime (RF Series)
Focal Length Proximity: 50mm Prime (Standard Field of View)
Maximum Aperture Profile: f/1.8
Minimum Operational Aperture: f/22
Lens Mount Type: Canon RF Mount (Natively optimized for Full-Frame Mirrorless)
Filter Thread Diameter Size: 43mm
Lens Optical Layout: 6 Elements configured in 5 Groups
Autofocus Motorization Engine: STM (Stepping Motor Technology)
Minimum Focus Distance: 11.8 inches / 30 cm
Maximum Magnification Ratio: 0.25x (1:4 reproduction ratio)
Aperture Blade Count: 7-Blade Diaphragm (Rounded Layout)
Dimensions (Diameter x Length): Approx. 2.70 x 1.60 inches / 69.2 x 40.5 mm
Weight: Approx. 5.6 oz / 160 grams (Ultra-lightweight everyday lens build)
