Canon RF 28mm f2.8 STM Lens (Canon RF)

The Canon RF 28mm f/2.8 STM is a full‑frame RF‑mount wide‑angle prime lens designed to deliver quality imaging performance in a small, lightweight package that’s easy to carry wherever you go. At only about 24.7 mm long and approximately 120 g in weight, this lens creates a discreet and portable setup when paired with Canon mirrorless cameras — perfect for daily shooting or travel.

Optics and Visual Characteristics
The 28 mm focal length captures a natural wide‑angle perspective with an approx. 75° diagonal field of view on full‑frame cameras, making it well‑suited for landscapes, street scenes, environmental portraiture, and general walk‑around shooting. On APS‑C bodies, it provides an effective focal length close to 45 mm, close to a classic “standard” view.

A fast f/2.8 maximum aperture enables shooting in a variety of lighting conditions, helping to isolate subjects with pleasing background separation and improved performance in lower‑light environments compared with slower kit lenses.

Autofocus and Handling
Autofocus is driven by Canon’s Stepping Motor (STM) system, which delivers smooth, quiet, and responsive focus transitions well‑suited to both still photography and video recording. A customizable control/focus ring on the lens barrel allows direct adjustment of settings such as aperture, shutter speed, or ISO, streamlining creative control without relying entirely on camera menus.

Build and Portability
With its minimalist “pancake” form factor and low weight, the RF 28mm f/2.8 STM is one of the most portable lenses in Canon’s RF lineup, making it ideal for photographers who prefer to travel light or want a compact everyday lens that doesn’t compromise optical quality.

Key Specifications

• Focal Length: 28 mm (wide‑angle)

• Maximum Aperture: f/2.8

• Minimum Aperture: f/22

• Lens Mount: Canon RF (full‑frame)

• Format Coverage: Full‑Frame (APS‑C equivalent ~45 mm)

• Optical Construction: 8 elements in 6 groups

• Angle of View (Diagonal): ~75°

• Autofocus: STM (Stepping Motor) with full‑time manual focus override

• Minimum Focus Distance: 0.23 m (23 cm / 9.1″)

• Maximum Magnification: 0.17×

• Aperture Blades: 7‑blade diaphragm (rounded for smoother bokeh)

• Filter Thread: 55 mm

• Dimensions: Approx. ø69.2 × 24.7 mm

• Weight: ~120 g

• Image Stabilization: None (depends on camera body IBIS)

Ideal Use Cases

• Street and travel photography — wide but natural perspective with a compact setup.

• Landscape and city scenes — broad field of view for scenery and architectural capture.

• Everyday and documentary shooting — lightweight and discreet lens for spontaneous moments.

• Video creation — quiet STM focus and compact form help for run‑and‑gun shooting.