The Canon EF 50mm f/1.2L USM Lens is a peerless normal-length L-series prime, distinguished by its ultra-large maximum aperture for narrow depth of field and soft, creamy background blur long loved by photographers. Designed for full-frame Canon EF-mount DSLRs, it’s also compatible with APS-C bodies, where it provides an 80mm equivalent focal length, making it a favorite of available-light photographers, wedding and event shooters who rely on its incredibly shallow depth of field for creative effect.
Optically, the lens offers a 50mm focal length with a maximum aperture of f/1.2 narrowing to f/16, delivering a 46-degree diagonal angle of view. The 8-element, 6-group optical design includes one large aspherical element to keep aberrations under control, a notably complex construction for a 50mm prime, along with Canon’s Super Spectra coating and lens element shaping to suppress flare and ghosting. A rounded 8-blade diaphragm contributes to the lens’s distinctive, exceptionally smooth background rendering.
Autofocus is handled by a ring-type Ultrasonic Motor (USM), paired with optimized focusing algorithms and a high-speed CPU, delivering fast, precise, and quiet autofocus performance along with full-time manual focus override. The lens uses an internal focusing design, with a minimum focusing distance of 1.48 ft. (0.45m), yielding a maximum magnification of 0.15x (1:6.67 macro reproduction ratio), extendable to 0.39-0.24x or 0.67-0.53x with Canon’s EF12 II or EF25 II extension tubes.
Build quality reflects the lens’s flagship L-series positioning, with a weather-resistant, metal barrel and metal mount construction, giving it a robust, substantial feel in hand. The lens accepts a 72mm filter thread, measures approximately 85.8 x 65.5mm, and weighs approximately 580g, and ships with an ES-78 lens hood and LP1214 lens case. It does not include image stabilization.
As a full-frame-compatible lens, the EF 50mm f/1.2L USM produces its full 46-degree angle of view on full-frame Canon bodies and an effective 80mm equivalent focal length on APS-C bodies.
Key Features
– 50mm f/1.2L normal-length prime lens for Canon EF mount
– 8 elements in 6 groups, including 1 large aspherical element
– Super Spectra coating
– Ring-type USM autofocus with full-time manual focus override
– Internal focusing design
– Rounded 8-blade diaphragm
– Weather-resistant, metal barrel and mount construction
– Minimum focusing distance of 1.48 ft. (0.45m); 0.15x maximum magnification
– Compatible with EF12 II/EF25 II extension tubes for increased magnification
– 72mm filter thread
– No image stabilization
– Includes ES-78 lens hood and LP1214 lens case
– Approximate weight: 580g
– Compatible with full-frame and APS-C Canon EF-mount cameras

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