Canon RF lens

Canon RF16mm F2.8 STM

16 mm, f/2.8, made for full frame. It mounts natively on 5 of our APS-C cameras; on the EOS R50 it frames like 26 mm.

16 mm · 26 mm equiv. on EOS R50
f/2.8
43 mm filter
165 g

40.6 mm long68.5 mm43 mm filter thread

Drawn from Canon's published size: 68.5 × 40.6 mm. Details simplified.

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On your camera

The view, the weight with the camera (battery and card included) and what the maker says about each pair. It is made for full-frame sensors and covers APS-C with room to spare.

Every camera in our catalogue this lens mounts on: 5
Camera	View (35 mm equiv.)	With the camera	Fit and maker's notes
Canon EOS R100	26 mm	521 g	Fits and works Native mount: it fits and works. Neither the lens nor the camera is stabilised; use a faster shutter speed or a support.
Canon EOS R50	26 mm	540 g	Fits and works Native mount: it fits and works. Neither the lens nor the camera is stabilised; use a faster shutter speed or a support.
Canon EOS R50 V	26 mm	535 g	Fits and works Native mount: it fits and works. Neither the lens nor the camera is stabilised; use a faster shutter speed or a support.
Canon EOS R10	26 mm	594 g	Fits and works Native mount: it fits and works. Neither the lens nor the camera is stabilised; use a faster shutter speed or a support.
Canon EOS R7	26 mm	777 g	Fits and works

What it frames

24 mm26 mm26 mm

Highlighted: this lens on the EOS R50. A zoom's dashed frame is its longest view.

At its closest (13 cm from the sensor) it fills the frame of the EOS R50 with a subject about 8.6 cm wide.

On the EOS R50, to scale

Side view drawn from the published depth of the camera and length of the lens. 540 g together.

Every lens with a 43 mm thread

Other wide primes for Canon RF

The nearest in focal length, with the numbers that differ.

Sigma 16mm F1.4 DC DN Contemporary26 mm equiv. · f/1.4 · 415 g (+250 g) · 67 mmCompare
Sigma 15mm F1.4 DC Contemporary24 mm equiv. · f/1.4 · 240 g (+75 g) · 58 mmCompare
Sigma 12mm F1.4 DC Contemporary19 mm equiv. · f/1.4 · 250 g (+85 g) · 62 mmCompare

Questions about this lens

Which cameras does the Canon RF16mm F2.8 STM fit?

5 APS-C cameras in our catalogue: EOS R100, EOS R50, EOS R50 V, EOS R10, EOS R7. It is made for full frame, so it also fits the full-frame cameras on its mount.

What does it frame like on APS-C?

16 mm frames like 26 mm on the EOS R50 (1.6x).

What filter size does it take?

43 mm screw-in filters. Every lens with a 43 mm thread.

Where these facts come from

Facts checked 9 Oct 2026 against the makers' specification pages. How we check

Size, weight, filter thread, close focus and magnification are Canon's published figures. We have not tested this lens; for image quality, read reviews from people who have.

Specifications

Mount: Canon RF
Made for: Full-frame sensors (covers APS-C too)
Focal length: 16 mm
Maximum aperture: f/2.8
Lens stabilisation: No
Weather sealing: No
Filter thread: 43 mm
Weight: 165 g
Size (diameter × length): 68.5 × 40.6 mm
Closest focus: 13 cm
Maximum magnification: 0.26x
Autofocus: Yes
Announced: 2021