Buy Sigma 17–40mm f/1.8 DC Art Lens
Features & Benefits
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Ultra-Bright Zoom: Constant f/1.8 aperture throughout the zoom range — rare for wide-to-standard zooms — providing excellent low-light capability and strong background separation.
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Versatile Wide-to-Standard Range: Covers 17–40mm (≈25–60mm equivalent on APS-C), making it ideal for landscapes, street, events, and environmental portraits.
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Art Series Quality: Part of Sigma’s Art line, known for premium build, sharp optics, and creative rendering.
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Advanced Optical Design: Uses aspherical and low-dispersion elements to reduce distortion, chromatic aberrations, and flare.
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Smooth Bokeh: Rounded diaphragm blades deliver pleasing out-of-focus areas, unusual for wide-angle zooms.
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Durable Construction: Metal barrel with precision engineering; designed for reliability in professional use.
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Fast & Accurate Autofocus: Internal focusing system with quiet high-speed motor suitable for stills and video.
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Creative Flexibility: Wide aperture and range allow one lens to handle astro, interiors, events, and general photography without switching.
Specifications
| Mounts Available | Sigma DC (APS-C format) |
| Focal Length | 17–40mm (≈25–60mm equivalent on APS-C) |
| Maximum Aperture | f/1.8 (constant) |
| Minimum Aperture | f/16 |
| Optical Construction | 15 elements in 12 groups (with aspherical & FLD glass) |
| Diaphragm Blades | 9, rounded |
| Minimum Focus Distance | 28 cm (11 in) |
| Maximum Magnification | 0.18× |
| Autofocus System | Internal focus, high-speed motor |
| Image Stabilization | None (relies on camera IBIS if available) |
| Filter Size | 82 mm |
| Dimensions (Diameter × Length) | 87 × 125 mm (≈ 3.4 × 4.9 in) |
| Weight | 945 g ≈ 2.08 lb ≈ 33.3 oz |
| Included Accessories | Lens hood, front & rear caps, padded lens case |
The Sigma 17–40mm f/1.8 DC Art is a groundbreaking wide-to-standard zoom for APS-C cameras, offering a prime-like f/1.8 aperture across its entire zoom range. It’s an excellent choice for photographers who want low-light performance and shallow depth of field in a versatile, high-quality lens.
