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Black compact Canon EF 50mm f/1.8 STM lens with 49mm filter thread

Canon

Canon EF 50mm f/1.8 STM Lens 0570C002

SKU CH-K1XM-QRTPH MPN 0570C002

Compact fixed focal length lens with f/1.8 aperture for low-light photography and background blur, STM motor for smooth autofocus, 50 mm on full frame or 80 mm on APS-C

  • Part0570C002
  • TypeFixed Length Lens
  • ColorBlack
  • Diameter49 mm
  • CompatibilityCanon EOS
  • Focus TypeAuto Focus
  • Wide f/1.8 aperture enables low-light shooting and shallow depth of field
  • STM stepping motor provides near-silent continuous autofocus for video and smooth focus for stills
  • Compact 2.7 × 1.6 in design weighing only 5.7 oz for everyday portability
  • 50 mm focal length becomes 80 mm equivalent on APS-C cameras for versatile framing
  • Minimum focus distance of 1.15 ft with 0.21× magnification allows close-up detail

Fixed 50 mm f/1.8 prime for Canon EOS

The Canon EF 50mm f/1.8 STM is a compact, lightweight fixed focal length lens built for Canon EOS cameras. Its large f/1.8 maximum aperture makes it well suited to low-light photography and creative background blur. The stepping motor provides near-silent continuous autofocus during movie recording and smooth focus for stills. Photographers wanting a versatile everyday prime will find it a practical choice.

Stepping motor sustains quiet continuous focus

The STM drive delivers near-silent, continuous Servo AF for video and smooth autofocus for stills without the hunting common in louder micromotor designs. Focus adjustment remains AF with full-time manual override, so precise corrections are possible at any point. The six-element, five-group construction maintains consistent optical performance across the focus range. Extended shooting sessions benefit from the motor's low heat output and steady response.

49 mm filter thread decides accessory fit

The lens accepts 49 mm screw-in filters, a diameter that determines which circular polarisers, neutral density filters or protective glass can be used directly. This thread size also governs compatibility with many third-party hoods and adapter rings. Buyers who need a larger filter diameter for existing filter sets or specialised optics will need a different lens or step-up rings. The 49 mm specification is the single constraint that defines accessory compatibility.

Highlights

  • Wide f/1.8 aperture enables low-light shooting and shallow depth of field
  • STM stepping motor provides near-silent continuous autofocus for video and smooth focus for stills
  • Compact 2.7 × 1.6 in design weighing only 5.7 oz for everyday portability
  • 50 mm focal length becomes 80 mm equivalent on APS-C cameras for versatile framing
  • Minimum focus distance of 1.15 ft with 0.21× magnification allows close-up detail

Specifications

BrandCanon
Model0570C002
Part0570C002
TypeFixed Length Lens
ColorBlack
Diameter49 mm
CompatibilityCanon EOS
Focus TypeAuto Focus
Focal Length50mm
ApertureMaximum: f/1.8
Camera MountCanon EF
Angle of View46 degrees
Minimum Focus Distance1.15 ft./0.35m
Lens Construction6 elements in 5 groups
Filter thread (Diameter)49 mm
SpecificationsFocal Length Maximum Aperture: 50mm f/1.8Lens Construction: 6 elements in 5 groupsDiagonal Angle of View: 46°Focus Adjustment: AF with full–time manualClosest Focusing Distance: 1.15 ft./0.35mFilter Size: 49mmMax. Diameter × Length, Weight: 2.7 × 1.6 in., 5.7 oz.
AutofocusNo
Focus AdjustmentAF with full-time manual
FeaturesCompact, lightweight fixed focal length lens ideal for everyday photos, and with a large f/1.8 aperture, a perfect lens for low-light photography and creative background blur.
80mm effective focal-length when attached to an APS-C camera, optimal for portraits and photos of fast moving subjects such as children and pets.
A stepping motor (Gear-type STM) supports the Movie Servo AF function in providing smooth and quiet continuous AF during video recording, as well as when shooting photos.
Improved exterior design includes new focus ring placement making it the most compact Canon 50mm
Dimensions2.70" x 1.50" (D x L)
Weight5.60 oz.
Shipping weight0.28 kg
Package size112 × 112 × 107 mm

Questions about this item

How much noise does the stepping motor make during continuous autofocus for video?

The STM motor delivers near-silent continuous servo AF, so the lens adds virtually no audible sound to the camera's internal microphone during movie recording.

Does the 49 mm filter thread mean I can use my existing circular polariser straight away?

Yes, the front thread is 49 mm, so any 49 mm filter — polariser, ND or protector — screws on without an adapter.

Will the 50 mm focal length give the same field of view on my APS-C EOS body as on full frame?

On an APS-C camera the effective focal length becomes 80 mm, narrowing the angle of view compared with the 46° diagonal on full frame.

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