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Sigma 17-40mm F1.8 DC Art
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Sigma · f/1.8 · Sony E mount

Sigma 17-40mm F1.8 DC Art

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Mount
KEY FACTS
BrandSigma
Release Year2025
Production StatusIn Production
Pro BrandingArt
Lens MountSony E
What We Like
+Constant f/1.8 aperture throughout entire zoom range - unique for APS-C zoom category
+Compact and lightweight (30% lighter than 18-35mm predecessor) despite fast glass
+Professional Art-series optics with prime-like optical performance and sharpness at f/1.8
+Video-optimized design with internal zoom, minimal focus breathing, and silent HLA autofocus
+Weather-sealed construction with dust/splash resistance and water/oil-repellent coating
+Versatile 17-40mm focal range (25.5-60mm equivalent) covering wide to standard coverage
Worth Knowing
−Some edge softness and fringing at wide aperture (f/1.8), especially at corners and in full-frame mode
−Limited zoom range compared to competitors - maximum of 40mm doesn't reach standard telephoto lengths
−Ghosting visible at wide aperture in backlit situations despite good flare control
−Not recommended for landscape/cityscapes due to edge performance limitations at wide angle

General

Brand
Sigma
Release Year
2025
Production Status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
Pro Branding
ⓘ
Specific branding codes used for professional-tier lenses.
Art
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.
Sony E
System
ⓘ
Indicates which camera system the lens is designed to attach to.
Sony E APS-C
Maximum Format
ⓘ
Largest sensor size compatible with the lens.
APS-C
Read our notes on general
The Sigma 17-40mm F1.8 DC Art is a well-crafted update to the popular 18-35mm F1.8 for APS-C mirrorless cameras, offering a broader zoom range and modern features with prime-like optical performance and excellent sharpness in the center, though it shows some softness at the edges. The lens boasts professional build quality with weather sealing, a smooth focus mechanism, and versatile video features, making it suitable for both photography and videography. At the time of writing, it is the world's largest-aperture standard zoom for APS-C mirrorless cameras.

Physical

Lens Weight
535 g
Lens Diameter
ⓘ
Width of the lens at its widest point
72.9 mm
Lens Length
ⓘ
How long the lens is from front to back.
115.9 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 )
17–40 mm
Aperture Range
ⓘ
Largest aperture at the lens's shortest focal length to longest focal length (aperture range start - end)
1.8
Blades
ⓘ
Number of diaphragm blades in aperture
11020
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.
28 cm01500

Features

Weather Sealing
ⓘ
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Yes