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Sigma 17-40 mm f/1.8 DC | Art Zoom Lens (Sony E-Mount APS-C)
Product Overview
This groundbreaking Sigma Art-series zoom brings a constant f/1.8 aperture across the versatile 17–40 mm (≈26–60 mm equivalent) range—offering the speed and shallow depth of field of multiple prime lenses in one compact zoom. Whether you're shooting in low light, video, or wide-angle portraits, this lens delivers exceptional performance and creative flexibility.Sigma Global+1
Key Features & Specs
| Feature | Details |
|---|---|
| Mount | Sony E (APS-C, full-frame mirrorless) dpreview.comCamera Decision |
| Aperture | Constant f/1.8–16, 11-rounded blades dpreview.com |
| Optics | 17 elements in 11 groups, including 4 SLD and 4 aspherical elements dpreview.comiii5.com |
| Autofocus | High-speed Linear Actuator (HLA) – smooth, silent, accurate Dustin Abbott |
| Minimum Focus Distance | 0.28 m (11 cm) |
| Magnification | ~1:4.8 |
| Build & Dimensions | Compact internal zoom; 525 g, 117.9 mm long, 67 mm filter thread Sigma Globaldpreview.comCamera Decision |
| Weather-Sealed | Yes – suitable for outdoor use Camera Decision |
| Accessories | Includes lens hood, pouch, front & rear caps Sigma Global |
Real-World Performance & Reviews
Low-light & Creative Control – Constant f/1.8 across the zoom range enables depth-of-field control and cinematic aesthetics.
Autofocus Precision – Reviewers praise the HLA motor: “Focus speed is near instantaneous… focus sound is basically nonexistent.”Dustin Abbott
Image Quality
Sharp centers and contrasty details across the range, especially when stopped down to f/4–f/8Amateur PhotographerPetaPixel.
Slight softness and chromatic aberration at wider angles can be effectively corrected in post-processingAmateur PhotographerPetaPixel.
Video-Friendly Design – Internal zoom, smooth aperture control, limited focus breathing—all ideal for filmmakersPetaPixelAmateur Photographer.
Balanced Build & Value – Professional-level performance in a relatively compact, lightweight, and affordable package compared to f/2.8 full-frame optionsDigital Camera Worldiii5.com.
Best For
Event, Travel & Street Photographers needing fast, zoom flexibility.
Low-Light Shooters who want shallow depth of field.
Videographers & Hybrid Creators needing cine-quality control in a zoom.
Content Creators & Photojournalists who want prime-like results with all-in-one convenience.