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Black Canon EF 50mm f/1.2L USM lens, 72mm filter thread, matte finish with red ring

Canon

Canon 1257B002 EF 50mm f/1.2L USM camera lens

SKU CH-63H3-JSFES MPN 1257B002

A 50mm f/1.2 Canon EF L-series lens with ultrasonic autofocus, aspherical element and 72mm filter thread for full-frame and APS-C bodies

  • TypeStandard & Medium Telephoto Lens
  • ColorBlack
  • Diameter72 mm
  • CompatibilityCanon EOS
  • Focal Length50 mm
  • ApertureMaximum: f/1.2 Minimum: f/16
  • Ultra-wide f/1.2 aperture creates shallow depth of field
  • Ring-type USM motor delivers fast autofocus with full-time manual override
  • Aspherical element minimises spherical aberration for corner-to-corner sharpness
  • 50 mm focal length suits full-frame and APS-C portrait work
  • Dust- and moisture-sealed L-series construction protects optics in tough conditions

Fast-aperture standard lens

The Canon EF 50mm f/1.2L USM is a professional L-series prime for full-frame and APS-C EOS bodies. Its ultra-wide maximum aperture of f/1.2 delivers extremely shallow depth of field and smooth background blur. An aspherical element and high-refraction glass minimise spherical aberration across the frame. Photographers needing subject isolation at a natural perspective will find it suited to portrait and low-light work.

EF mount constraints

The lens uses the Canon EF mount, so it fits full-frame 35 mm and APS-C format EOS cameras directly. On APS-C sensors the 50 mm focal length provides a narrower field of view equivalent to a short telephoto. The 72 mm filter thread accepts standard accessories. Autofocus is driven by a ring-type ultrasonic motor with full-time manual override; the minimum focus distance is 1.48 ft and maximum magnification is 0.15x.

Upgrade from slower 50 mm primes

Replacing an f/1.8 or f/1.4 standard prime gains two-thirds to one full stop of light and a visibly shallower depth of field at the same framing. The L-series build adds dust and moisture sealing plus a depth-of-field scale with infrared index. The jump is worth it when wide-open sharpness and subject separation are critical to the final image.

Highlights

  • Ultra-wide f/1.2 aperture creates shallow depth of field
  • Ring-type USM motor delivers fast autofocus with full-time manual override
  • Aspherical element minimises spherical aberration for corner-to-corner sharpness
  • 50 mm focal length suits full-frame and APS-C portrait work
  • Dust- and moisture-sealed L-series construction protects optics in tough conditions

Specifications

BrandCanon
Model1257B002
TypeStandard & Medium Telephoto Lens
ColorBlack
Diameter72 mm
CompatibilityCanon EOS
Focal Length50 mm
ApertureMaximum: f/1.2 Minimum: f/16
Format35 mm Full-Frame, Canon (APS-C)
Camera MountCanon EF
Angle of View46 degrees
Minimum Focus Distance1.48ft
Magnification0.15x
Lens Construction8 elements in 6 groups
SpecificationsFocal Length Maximum Aperture 50mm f/1.2 Lens Construction 8 elements in 6 groups Diagonal Angle of View 46 degrees (with full-frame cameras) Focus Adjustment AF with full-time manual Closest Focusing Distance 1.48 ft. / 0.45m Filter Size 72mm Max. Diameter x Length, Weight 3.4 in. x 2.6 in./19.2 oz. (lens only)
AutofocusYes
Focus AdjustmentAF with full-time manual
FeaturesThe EF 50mm f/1.2L USM is a peerless new standard lens featuring an ultra-large aperture for a narrow depth of field and soft background blur so loved by photographers everywhere.
The EF 50mm f/1.2L USM is suitable for any shooting situation; its lens coating and construction are optimized to minimize the ghosting and flare that frequently occurs when lenses are used with digital cameras.
This high-performance, weather-resistant lens delivers all the superb image resolution and contrast you expect in a Canon L Series Lens.
Dimensions3.40" x 2.60" (Max. Diameter x Length)
Weight1.30lbs
Shipping weight0.90 kg
Package size164 × 140 × 140 mm

Questions about this item

Is the f/1.2 maximum aperture the only option in this EF 50mm L-series line?

The EF 50mm f/1.2L USM is the specific model listed; other 50mm EF lenses such as the f/1.4 or f/1.8 are separate products with different maximum apertures and constructions.

What does the f/1.2 aperture actually deliver on a full-frame EOS body?

At f/1.2 the lens gives an extremely shallow depth of field, letting you isolate a subject from a soft background while still gathering enough light for low-light shooting without flash.

The Canon EF mount — does it limit anything on newer mirrorless bodies?

The lens uses the Canon EF mount natively on DSLRs; on EOS R mirrorless cameras it works via Canon's EF-EOS R adapter with full autofocus and aperture control.

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