Canon RF 45mm F/1.2 STM Lens

An Affordable, Fast Standard Prime

The Canon RF 45mm F1.2 STM Lens is a compact, budget-friendly standard prime designed for Canon RF-mount full-frame mirrorless cameras, built for photographers who want the shallow depth of field and bokeh of an f/1.2 lens without the size, weight, or price of Canon's L-series options. It slots in above the RF 50mm F1.8 STM and below the RF 50mm F1.4L VCM and RF 50mm F1.2L USM lenses in Canon's lineup, offering a genuinely accessible entry point into fast-aperture shooting.

Designed for Natural Perspective and Low Light

This lens is made for shooters who want a versatile everyday prime with strong low-light capability. Its 45mm focal length offers a natural perspective for general-purpose images, only slightly wider than a traditional 50mm, while the ultra-bright f/1.2 maximum aperture allows for faster shutter speeds in low light and increased control over depth of field.

Compact, Lightweight Build

At just 346g, this is Canon's first RF f/1.2 lens with autofocus to weigh under 400g, making it notably smaller and lighter than typical f/1.2 options. The optical design comprises 9 elements in 7 groups, including one aspherical element to suppress spherical aberrations and distortion, along with a Super Spectra coating to minimize ghosting and flare. Note that this lens does not include weather-sealing or optical image stabilization, keeping costs down.

Smooth, Quiet Autofocus

The lens uses Canon's STM stepping motor for smooth, fast, and quiet autofocus, well suited to both stills and video work, with full-time manual focus override available. A customizable control ring on the barrel allows quick adjustment of settings like exposure compensation, aperture, or ISO directly from the lens.

Key Features at a Glance

• Lens: Canon RF 45mm F1.2 STM
• Mount: Canon RF (full-frame, compatible with APS-C RF bodies)
• Focal length: 45mm
• Maximum aperture: f/1.2
• Optical design: 9 elements in 7 groups, including 1 aspherical element
• Aperture blades: 9-blade circular diaphragm
• Autofocus: STM stepping motor, full-time manual override
• Minimum focus distance: 45cm, max magnification 0.13x
• Weight: approx. 346g
• Filter diameter: 67mm
• Extras: customizable control ring

A Strong Choice for Everyday Portraits and Low-Light Shooting

The Canon RF 45mm F1.2 STM is a smart choice for photographers who want fast-aperture performance and creamy background blur without a premium price tag. It offers a practical, natural-perspective prime well suited to portraits, lifestyle content, and low-light work, making it an appealing option for hobbyists and photographers building out their first RF lens kit.