Canon RF 45mm f1.2 STM Lens

Highlights:

45mm prime lens for a natural, standard perspective

Ultra-fast f/1.2 aperture for creative depth of field control and low-light shooting

STM motor for smooth, fast and quiet autofocus

Compact and lightweight design – Canon’s first RF f/1.2 autofocus lens under 400g

Customisable control ring for easy adjustment of camera settings

9-blade circular aperture for artistic bokeh and highlight rendering

 

A Compact, Ultra-Fast 45mm Prime Lens

The Canon RF 45mm F1.2 STM is a bright standard prime lens designed for photographers seeking creative depth of field control and strong low-light performance. Featuring a super-fast f/1.2 aperture, this lens offers expressive image results in a compact and lightweight design.

As the first Canon RF f/1.2 autofocus lens weighing less than 400g, it delivers creative flexibility without added bulk. It also represents a competitively priced entry point into fast-aperture photography within Canon’s enthusiast RF lens range.

Ideal for Advanced and Creative Photography

This versatile 45mm prime lens is suitable for a wide range of photography styles:

Portrait Photography

Capture standout portraits with shallow depth of field and smooth, natural background blur.

Street Photography

The 45mm focal length provides a natural perspective, while STM autofocus responds quickly to fleeting moments.

Low Light Photography

The bright f/1.2 aperture allows you to maximise available light. The 9-blade circular aperture design creates elegant starburst effects and smooth bokeh.

Travel Photography

Compact and lightweight, this lens is well suited for travel. Its fast aperture allows you to capture scenes with expressive depth and clarity.

Super-Fast f/1.2 Maximum Aperture

The f/1.2 maximum aperture offers enhanced creative control, enabling beautifully shallow depth of field and strong low-light performance. It allows photographers to explore wide-aperture techniques with precision and flexibility.

Reliable STM Autofocus Performance

Canon’s STM autofocus system delivers smooth, fast and quiet performance. Even when working with shallow depth of field, the lens maintains reliable subject focus, helping you capture moments accurately.

Compact Design for Everyday Use

Weighing less than 400g, the RF 45mm F1.2 STM is Canon’s first RF f/1.2 lens in this weight category. Its constant length and lightweight construction make it balanced for both photography and video use.

Designed for Versatile Shooting

• Separate focus and control rings
• 67mm filter size
• Minimum focusing distance of 45cm

These features allow precise control and close-up detail capture.

Specialist Build Quality

Built for lasting performance, the lens features:

• Metal mount for secure connection to EOS R System cameras
• 9-blade aperture
• Aspheric lens element
• Super Spectra coating
• Focus breathing correction when used with a compatible camera

The Canon RF 45mm F1.2 STM combines a natural 45mm perspective, ultra-fast aperture, compact design, and reliable autofocus in a lightweight RF mount lens designed for expressive, wide-aperture photography

 

Specifications:     

Feature	Description
45mm prime lens	A standard perspective for natural-looking images
f/1.2 prime lens	Ultra-fast and bright for creative depth of field control
Compact and lightweight	Canon’s first RF f/1.2 lens with autofocus weighing less than 400g
STM motor	Delivers smooth, fast and quiet autofocus
Control ring	Enjoy easy customisation and control over camera settings
9-blade circular aperture	For artistic bokeh and highlights

Optical Specifications

Specification	Details
Image Size	Full Frame
35mm Film Equivalent Focal Length (mm)	-
Angle of View (Horizontal, vertical, diagonal)	49° 35', 29° 50', 51° 20'
Lens Construction (Elements/Groups)	9/7
Special Optics	1x PMo Aspherical
Special Features	-
Number of Diaphragm Blades	9
Minimum Aperture	16
Closest Focusing Distance (m)	0.45
Maximum Magnification (x)	0.13
Control Ring	Yes
Image Stabilizer OIS	-
Image Stabilizer IBIS x OIS	Center 8.0 stops
	Corner 7.5 stops
AF Actuator	STM
Coatings	Super Spectra
Fluorine	No

Physical Specifications

Specification	Details
Dust/Moisture Resistance	No
Exterior Coating	-
Filter Diameter (mm)	67
Max. Diameter x Length (mm)	78 x 75
Weight (g)	346