Sigma 28-45mm f/1.8 DG DN Art Lens (L-Mount)

Sigma 28-45mm f/1.8 DG DN Art Lens (L-Mount) Overview

The Sigma 28-45mm f/1.8 DG DN Art is the world's first full-frame mirrorless zoom lens to feature a constant f/1.8 aperture throughout its entire zoom range. Combining the versatility of a zoom with the optical performance of a prime lens, it is an outstanding choice for professional photographers and filmmakers who demand exceptional image quality, shallow depth of field, and low-light performance.

Designed with 18 elements in 15 groups, including three aspherical and five Special Low Dispersion (SLD) elements, the lens effectively minimizes flare, ghosting, and optical aberrations for outstanding sharpness and contrast. Its 11-blade rounded diaphragm produces smooth, natural-looking bokeh, making it ideal for portraits, weddings, events, and cinematic productions.

Maintaining a minimum focusing distance of just 30.2cm (11.9") throughout the zoom range, the lens offers impressive close-up capabilities with a 1:4 maximum magnification ratio at 45mm. This versatility allows photographers to capture detailed subjects while retaining the flexibility of a standard zoom.

Purpose-built for video production, the internal zoom design keeps the lens length constant during operation, making it ideal for use on gimbals and stabilizers. The optical design also suppresses focus breathing, ensuring smooth focus transitions for professional-looking footage. Sigma's high-speed linear actuator (HLA) autofocus delivers fast, precise, and near-silent focusing, while enhanced manual focus controls include click and lock mechanisms for improved operational control.

Engineered for reliability in demanding environments, the lens features Super Multi-Layer and Nano Porous Coatings to reduce flare and ghosting, a water- and oil-repellent coating on the front element, a dust- and splash-resistant construction, and a durable brass bayonet mount for long-lasting performance.