Canon

Canon 0570C005AA EF 50mm f/1.8 STM Lens

4.8 (17624 reviews)
f/1.8

Canon's lightweight 50mm f/1.8 prime delivers gorgeous background blur and sharp portraits at a budget-friendly price.

$169.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Canon EF 50mm f/1.8 STM — often affectionately called the "nifty fifty" — is one of the most popular lenses in Canon's entire lineup, and for good reason. Its f/1.8 maximum aperture gathers significantly more light than typical kit zoom lenses, unlocking the ability to shoot in dimmer environments at lower ISOs and to create the kind of shallow depth-of-field and smooth background bokeh that elevates portraits, product shots, and street photography. The 50mm focal length on a full-frame body provides a natural perspective close to what the human eye sees, making it an endlessly versatile prime for everyday shooting. On APS-C bodies, the 80mm equivalent field of view turns it into a flattering short telephoto portrait lens.

Canon's STM autofocus motor is a meaningful upgrade over the older EF 50mm f/1.8 II it replaced, delivering smoother and near-silent focus acquisition that makes this lens genuinely useful for video work alongside stills. The optical formula of 6 elements in 5 groups produces impressively sharp results from f/2.8 onward, with a pleasant rendering wide open at f/1.8 that prioritizes character over clinical perfection. At just 159 grams and roughly 1.5 inches in length, it's one of the most compact and portable lenses available, making it an ideal walkaround companion or a second lens that takes up virtually no space. The 49mm filter thread keeps accessory costs low, and full-time manual focus override lets you fine-tune focus without switching out of AF mode.

Key Features

50 millimeter focal length and maximum aperture of f/1.8

Great for portraits, action, and nighttime photography; Angle of view (horizontal, vertical, diagonal): 40º, 27º,46º

Minimum focusing distance of 1.15 feet (0.35 meter) and a maximum magnification of 0.21x

Stepping motor (STM) delivers near silent, continuous move Servo AF for movies and smooth AF for stills

80 millimetre effective focal length on APS C cameras, 50 millimetre on full frame cameras. Lens construction: 6 elements in 5 groups

Specifications

Brand
Canon
Model
EF 50mm f/1.8 STM (0570C005AA)
Focal Length
50mm
Maximum Aperture
f/1.8
Lens Construction
6 elements in 5 groups
Angle of View (Diagonal)
46°
Minimum Focusing Distance
1.15 ft (0.35m)
Maximum Magnification
0.21x
Autofocus Motor
STM (Stepping Motor)
Filter Size
49mm
Dimensions
2.7 x 1.5 in (69.2 x 39.3mm)
Weight
5.6 oz (159g)
Mount
Canon EF

Pros & Cons

👍 Pros

  • Wide f/1.8 aperture produces smooth, creamy background bokeh ideal for portrait photography
  • Extremely lightweight at just 159 grams, adding almost no bulk to your camera bag
  • STM autofocus motor is near-silent, making it practical for both stills and video
  • One of the most affordable lenses in Canon's lineup while delivering excellent optical sharpness

👎 Cons

  • No optical image stabilization, which can be challenging for handheld shooting in very low light or video work
  • The 49mm filter thread and lightweight plastic construction feel less robust than professional-grade lenses
  • Autofocus speed is adequate but not as fast as Canon's USM-equipped lenses for tracking fast action
  • Minimum focusing distance of 1.15 feet limits how close you can get for pseudo-macro shots

Frequently Asked Questions

Yes, the EF 50mm f/1.8 STM works on both full-frame Canon EF-mount cameras (where it gives a 50mm field of view) and APS-C models (where the crop factor yields an 80mm equivalent field of view).
The STM (Stepping Motor) delivers near-silent autofocus, making it well suited for video recording where audible focus noise would be distracting.
No, the EF 50mm f/1.8 STM does not include optical image stabilization. However, the wide f/1.8 aperture allows faster shutter speeds in low light, which helps compensate.
It uses a 49mm filter thread, which is a common and inexpensive size for UV, polarizer, and ND filters.
Yes, with Canon's EF-to-RF mount adapter, this lens works on Canon EOS R-series mirrorless bodies with full autofocus functionality.