Sigma 28-45mm f/1.8 DG DN Art Lens

Sigma 28-45mm f/1.8 DG DN Art Lens: The World’s First Constant f/1.8 Zoom

Redefine your professional kit with the Sigma 28-45mm f/1.8 DG DN | Art, a revolutionary zoom lens designed specifically for full-frame mirrorless cameras. By achieving a constant f/1.8 aperture throughout its entire zoom range, this lens effectively bridges the gap between zoom versatility and the shallow depth of field and low-light performance typically reserved for high-end prime lenses.

Sigma 28-45mm f/1.8 DG DN Key Product Features

• Revolutionary Constant f/1.8 Aperture: Maintains exceptional brightness and subject isolation across the 28–45mm range, providing prime-lens-level quality in a flexible zoom format.

• Professional HLA Autofocus: Equipped with Sigma’s High-response Linear Actuator (HLA) motor, delivering fast, quiet, and highly precise focusing that excels in both still photography and cinematic video production.

• Cinematic Video Capabilities: Features an inner zoom and focus mechanism, a de-clickable aperture ring for stepless exposure control, and an aperture lock switch to prevent unintended adjustments.

• Advanced Optical Design: Engineered with 18 elements in 15 groups, including multiple SLD and aspherical elements, plus Nano Porous and Super Multi-Layer coatings to maximize sharpness and minimize flare and ghosting.

• Robust Build Quality: Built to Art-series standards, the lens features a dust- and splash-resistant structure with professional-grade materials, making it reliable for demanding wedding, event, and commercial work.

• Impressive Macro Capability: Offers a constant minimum focusing distance of 30cm (11.9 in) across the entire zoom range, allowing for a 1:4 maximum magnification ratio for creative close-ups.

Sigma 28-45mm f/1.8 DG DN Technical Specifications

Sigma 28-45mm f/1.8 DG DN Pros and Cons

Pros

• Unmatched Aperture: The constant f/1.8 is a game-changer for low-light and subject separation.

• Prime-Level Quality: Delivers exceptional sharpness and clarity throughout the zoom range.

• Video-Optimized: Internal zoom/focus and professional aperture controls make it ideal for filmmakers.

Cons

• Premium Investment: Its unique technology comes at a higher professional price point.

• Size and Weight: While more portable than carrying multiple primes, it remains a robust and substantial lens.

Sigma 28-45mm f/1.8 DG DN Pricing in Kenya

Prices as of June 2026. Figures may vary based on retailer promotions and stock availability.

Sigma 28-45mm f/1.8 DG DN Verdict

The Sigma 28-45mm f/1.8 DG DN Art is a groundbreaking tool that challenges the traditional necessity of carrying multiple prime lenses. By offering professional optical performance, a constant f/1.8 aperture, and a robust feature set optimized for both photography and cinematography, it is a masterclass in modern lens engineering. If you are a professional creator looking to streamline your kit without sacrificing the speed and “look” of prime lenses, this is an essential, high-performance investment for your Sony E-mount system.