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Canon

RF 28mm F2.8 STM

Canon RF · Prime · FULL FRAME

World's smallest RF lens — 120g pancake with STM AF and 0.23m close focus.

$299

Launch price

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Last updated June 2026

Key specs at a glance

Focal Length

28 mm

Max Aperture

f/2.8

Mount

Canon RF

Coverage

Full Frame

Stabilization

No

Weight

120 g

Min Focus

23 cm

Filter Size

55 mm

Where to buy the Canon RF 28mm F2.8 STM

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Best for

Use-case scores

Scored algorithmically from verified specs. 10 = best in class.

Portrait

Limited
3.0/ 10
  • · f/2.8 aperture is solid for standard portraits

Sports & Action

Good
6.5/ 10
  • · Constant fast f/2.8 aperture allows fast shutter speeds
  • · Equipped with high-speed silent AF motor for fast action tracking

Video & Hybrid

Limited
2.0/ 10
  • · Internal focusing keeps lens length constant and stops rotation

Landscape

Limited
1.0/ 10
  • · Relatively light weight (120g) is easy to hike with

Travel

Good
7.0/ 10
  • · Ultralight (120g) — perfect for all-day carry without fatigue
  • · Pancake-style form factor is extremely discreet and compact

Wildlife

Limited
0.0/ 10

Macro & Close-up

Limited
1.5/ 10
  • · Short focus distance of 23 cm allows close shooting

Pros

  • Prime design typically delivers strong sharpness and lighter weight
  • Lightweight design easy to carry all day
  • Native Canon RF mount compatibility

Cons

  • Third-party or older alternatives may offer better value

Ready to buy the Canon RF 28mm F2.8 STM?

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Full specifications

Verified specs · Canon RF 28mm F2.8 STM

Optical Design

Focal length (Min)28 mm
Focal length (Max)28 mm
Max aperture (Wide)f/2.8
Max aperture (Tele)f/2.8
Elements8
Groups6
Special elements3 PMo

Focus System

Min focus distance23 cm
Max magnification0.17 ×
Autofocus motorSTM
Internal focusYes

Image Stabilization

Optical stabilizationNo
OIS effectiveness0 stops

Physical Specs

Weight120 g
Length24.7 mm
Diameter69.2 mm
Filter thread size55 mm
Weather sealingNo
Diaphragm blades7

Compatibility

Lens mountCanon RF
Format coverageFull Frame

Features

Control ringNo
Custom function buttonNo