CameraReview
CompareCamerasLensesAction CamerasGuides
Sigma 10-18mm F2.8 DC DN
—
UNSCORED
Sigma · f/2.8 · Canon RF mount

Sigma 10-18mm F2.8 DC DN

Where to buy — 1 offer
Mount
KEY FACTS
BrandSigma
Release Year2024
Production StatusIn Production
Lens MountCanon RF
SystemCanon EOS R
What We Like
+Smallest and lightest F2.8 ultra-wide zoom for APS-C cameras at 260g and 62mm length
+Fast constant F2.8 aperture delivers superior low-light performance compared to Canon's variable F4.5-6.3 lens
+Excellent optical performance with minimal distortion, low chromatic aberration, and well-suppressed flare
+Fast, silent, and accurate autofocus with minimal focus breathing ideal for video work
+Ultra-compact and portable design with push-on petal lens hood for travel and gimbal mounting
+Close minimum focusing distance (11.6cm at 10mm) enables 1:4 macro magnification for unique compositions
Worth Knowing
−No optical image stabilization (unlike Canon's RF-S 10-18mm F4.5-6.3), requiring camera IBIS or higher ISO in low light
−Higher price point at $659 versus Canon's $329 alternative, though justified by faster aperture
−Limited weather sealing compared to Art or Sports lines—gasket at mount only, not full lens body sealing
−Soft edges and corners at wide apertures (F2.8), particularly noticeable at 10mm focal length

General

Brand
Sigma
Release Year
2024
Production Status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Lens Mount
ⓘ
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Canon RF
System
ⓘ
Indicates which camera system the lens is designed to attach to.
Canon EOS R
Maximum Format
ⓘ
Largest sensor size compatible with the lens.
APS-C
Read our notes on general
The Sigma 10-18mm F2.8 DC DN | Contemporary is the world's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras, covering an effective focal range of 15-27mm (35mm equivalent). With a lot of optical performance in such a small package, this lens performs well on Canon RF mount and is what reviewers would be buying if they were in the market right now for an APS-C RF wide-angle option. The primary limitation is the lack of optical image stabilization, though this can be offset by in-body stabilization on cameras like the R7.

Physical

Lens Weight
260 g
Lens Diameter
ⓘ
Width of the lens at its widest point
72.2 mm
Lens Length
ⓘ
How long the lens is from front to back.
62 mm
Front Filter Size
ⓘ
Diameter of attachable filters.
67 mm

Optics

Focal Range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
10–18 mm
Aperture Range
ⓘ
Largest aperture at the lens's shortest focal length to longest focal length (aperture range start - end)
2.8
Blades
ⓘ
Number of diaphragm blades in aperture
7020
Zoom Lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
Yes
Closest Focusing Distance
ⓘ
Minimum distance for a subject to be in focus.
11.6 cm01500
Autofocus Mode
Yes