Sigma 18-35mm f/1.8 DC HSM Art Lens

Key Information:

•Model: Sigma 18-35mm f/1.8 DC HSM Art Lens
•Type: Wide-angle to standard zoom lens
•Mounts: Available in Canon EF, Nikon F, Sony A, Pentax K, and Sigma SA
•Compatibility: APS-C format cameras

Detailed Specifications:

•Focal Length: 18-35mm (27-52.5mm equivalent on APS-C cameras)
•Maximum Aperture: f/1.8
•Minimum Aperture: f/16
•Lens Construction: 17 elements in 12 groups
•Angle of View: 76.5° - 44.2°
•Minimum Focus Distance: 11 inches (28 cm)
•Maximum Magnification Ratio: 0.23x
•Diaphragm Blades: 9, rounded
•Filter Size: 72mm
•Dimensions: 3.1 x 4.8 inches (78 x 121 mm)
•Weight: 28.6 oz (811 g)
•Focus Type: Autofocus with Hyper Sonic Motor (HSM) for fast and quiet focusing
•Special Elements: 4 aspherical elements and 5 Special Low Dispersion (SLD) glass elements to minimize aberrations

How and Why This is a Great Product:

1. Exceptional Image Quality:

•High Sharpness and Clarity: The lens design includes multiple aspherical elements and Special Low Dispersion (SLD) glass elements that help to reduce chromatic aberrations and distortions, resulting in sharp, clear images throughout the zoom range.
•Wide Aperture: With a maximum aperture of f/1.8, this lens excels in low-light conditions and offers beautiful bokeh (background blur), making it ideal for portraiture, indoor photography, and creative effects.

2. Versatile Zoom Range:

•18-35mm Focal Length: Covers a useful wide-to-standard zoom range, equivalent to 27-52.5mm on APS-C sensors, making it suitable for landscapes, portraits, street photography, and more.

3. Superior Build Quality:

•Durable Construction: The lens features a thermally stable composite (TSC) material that ensures durability and reliability under varying temperatures. It also has a solid metal mount for secure attachment to the camera.
•Smooth Focus Ring: The large, smooth focus ring provides excellent tactile feedback for precise manual focusing.

4. Advanced Autofocus:

•Hyper Sonic Motor (HSM): Delivers fast, accurate, and quiet autofocus, which is essential for both still photography and video recording.
•Internal Focusing: Ensures that the front element does not rotate, making it easier to use polarizing filters and other lens accessories.

5. Artistic Flexibility:

•9-Rounded Blade Diaphragm: Produces pleasing, round bokeh effects, enhancing the aesthetic quality of out-of-focus areas.
•Consistent Aperture: The constant f/1.8 aperture throughout the zoom range allows for consistent exposure settings, providing creative flexibility and ease of use.

6. Highly Acclaimed Performance:

•Industry Recognition: The Sigma 18-35mm f/1.8 DC HSM Art lens has received numerous accolades for its groundbreaking design and exceptional performance, making it a favorite among professional photographers and enthusiasts alike.


The Sigma 18-35mm f/1.8 DC HSM Art Lens is a groundbreaking zoom lens that offers the performance and image quality typically associated with prime lenses. Its constant f/1.8 aperture, superior build quality, and advanced optical design make it an exceptional choice for photographers looking for a versatile, high-performance lens. Whether shooting landscapes, portraits, or creative projects, this lens provides the flexibility and quality needed to achieve stunning results.