Canon RF 45mm F/1.2 STM Lens

Canon RF 45mm F/1.2 STM Lens

In The Box

• Canon RF 45mm F/1.2 STM Lens

Canon RF 45mm F/1.2 STM Lens

The Canon RF 45mm f/1.2 STM is a full-frame prime for Canon RF-mount mirrorless cameras featuring a large f/1.2 maximum aperture in a surprisingly compact and lightweight package (~346 g).
With a 45 mm focal length (just slightly wider than the classic “normal” 50 mm), it offers shallow depth of field, creamy bokeh and strong low-light capabilities.
Key specs include a 67 mm front filter thread, 9-blade diaphragm, STM stepping motor autofocus and a compact form factor: approx. 78 mm diameter × 75 mm length, weighing about 346 g.

Key Features

• Ultra-fast f/1.2 maximum aperture for very shallow depth-of-field, excellent subject isolation, and strong performance in low light.
• Compact and lightweight for an f/1.2 lens: approx. 346 g, diameter ~78 mm, length ~75 mm.
• STM (Stepping Motor) autofocus drive — smooth and quiet, suited for stills and video.
• Versatile “normal” focal length of 45mm (on full-frame) gives a natural perspective for many types of photography: portraits, lifestyle, walkaround.
• 67mm front filter thread — relatively modest size for filters.
• Optical design: 9 elements in 7 groups, 9-blade diaphragm, 1 aspherical element to help reduce aberrations.

Best Suitable

• Portrait photographers looking for strong subject separation and beautiful bokeh with a “standard” focal length.
• Lifestyle, travel or everyday shooters who want a fast prime lens that doesn’t weigh a lot or become cumbersome.
• Low-light shooters who need wide apertures, but prefer something more compact than large “flagship” f/1.2 lenses.
• Videographers working on full-frame or APS-C RF-mount systems who value a fast aperture lens with a natural field of view and quiet autofocus.
• Content creators who also want shallow depth-of-field and creative background blur, but in a more affordable / lighter package compared to heavier L-series f/1.2 glass.

FAQ – Canon RF 45mm F/1.2 STM Lens

Is this lens full-frame compatible?

Yes,it’s designed for Canon RF-mount full-frame cameras (and will also work on RF-mount APS-C cameras with crop).

Does this lens have image stabilization (IS) built in?

No, this lens does not include optical image stabilization. You’ll rely on the camera body’s IBIS (if available) or stabilized lenses.

What is the minimum focus distance and magnification?

Minimum focus distance is about 0.45 m (17.7 in) and maximum magnification is around 0.13×.

How does the autofocus perform?

The STM motor is smooth and quiet, good for video and stills, though it may not be as fast as some high-end USM drives — but given the compact form and price point it’s a strong offering.

Is this lens weather-sealed?

According to the specification announcements, it does not have full weather-sealing.

Specifications