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Sigma 17-40mm F1.8 DC Art
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Sigma · 17-40 mm · f/1.8 · Sony E, Canon RF, Leica L, Fujifilm X mount · APS-C

Sigma 17-40mm F1.8 DC Art

From $909 — 1 offer
KEY FACTS
BrandSigma
Announcement dateJun 2025
Released2025
Production started2025
Production statusIn Production
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
Announcement date
ⓘ
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
Jun 2025
Released
ⓘ
Refers to the year this camera was officially made available for sale.
2025
Production started
2025
Production status
ⓘ
Current status of lens manufacturing (e.g., in production, discontinued).
In Production
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.

Optical

Min Aperture
F16
Optical Design
17 elements in 11 groups
Aspherical Elements
4 aspherical elements
Special Elements
4 SLD (Super Low Dispersion) elements
Maximum Magnification
1:4.8 at 40mm
35mm Equivalent (APS C)
25.5-60mm

Aperture

Aperture Ring
Yes, with de-clickable switch for video

Autofocus

Type
HLA (High-Response Linear Actuator)
Drive Type
Linear motor, direct focus lens drive
AF L Buttons
Two customizable AFL buttons

Zoom mechanism

Type
Inner zoom (internal focus/zoom)
Barrel Length
Constant (unchanging during zoom)

Coating

Lens Coating
Super Multi-Layer Coating
Front Element Coating
Water- and oil-repellent coating

Build durability

Lens Hood
Included (LH-728-02, petal-shaped)
Construction
Made in Japan

Mount options

Sensor Format
APS-C (DC designation)

Video features

Focus Breathing
Minimal (suppressed)
Zoom Creep
None (internal zoom design)
Manual Focus
Available via knurled focus ring

Optics

Min focal length
17 mm
Max focal length
40 mm
Focal range
ⓘ
Shortest to longest focal length of the lens (zoom range start - end )
17-40 mm
Zoom lens
ⓘ
Zoom allows you to vary the focal length, change between long shots and close-ups
Yes
Max aperture wide
1.8
Max aperture zoom
1.8
Closest focusing distance
ⓘ
Minimum distance for a subject to be in focus.
28 cm01500
Blades
ⓘ
Number of diaphragm blades in aperture
11020

Features

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

Physical

Front filter size
ⓘ
Diameter of attachable filters.
67 mm
Lens length
ⓘ
How long the lens is from front to back.
115.9 mm
Lens diameter
ⓘ
Width of the lens at its widest point
72.9 mm
Lens weight
535 g
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, Canon RF, Leica L, Fujifilm X
Maximum format
ⓘ
Largest sensor size compatible with the lens.
APS-C