Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E

The Sigma 28-70mm f/2.8 DG DN Contemporary is a compact, lightweight standard zoom lens engineered for full-frame Sony E-mount mirrorless cameras (and usable on APS-C bodies with a 42-105mm equivalent focal range). Characterized by its bright, constant f/2.8 maximum aperture, it balances low-light capability and shallow depth-of-field control with a significantly smaller footprint than traditional 24-70mm f/2.8 zooms. Featuring advanced glass elements, Super Multi-Layer and Nano Porous coatings, a fast stepping autofocus motor, and a dust- and splash-resistant brass bayonet mount, it is an ideal portable option for daily walkaround shooting, travel, portraiture, and gimbal-mounted video production.

Key Features and Specifications

* Sony E Mount Compatibility: Native full-frame lens compatible with Sony Alpha mirrorless cameras (and APS-C bodies providing a 42-105mm equivalent focal range).
* Fast Constant f/2.8 Aperture: Maintains a bright f/2.8 maximum aperture across the entire zoom range for consistent exposure and soft background isolation.
* Advanced Optical Design: Features 16 elements in 12 groups, including 2 FLD (F Low Dispersion), 2 SLD (Special Low Dispersion), and 3 Aspherical elements to suppress chromatic aberrations, color fringing, and field distortion.
* Nano Porous & Super Multi-Layer Coatings: Reduces internal flare and ghosting to preserve contrast and color fidelity in direct light; includes a water- and oil-repellent front element coating.
* Stepping AF Motor: Incorporates a single lightweight focusing element driven by a stepping motor for rapid, responsive, and near-silent autofocusing suited for stills and video.
* Close Focusing Performance: Focuses down to 7.5 inches (19 cm) at the 28mm end (1:3.3 magnification) and 15 inches (38 cm) at the 70mm end (1:4.6 magnification).
* Weather-Resistant Brass Mount: Durable precision brass bayonet mount equipped with a rubber sealing gasket for dust- and splash-resistant operation.
* 9-Blade Rounded Diaphragm: Delivers smooth, natural background blur (bokeh) at wider apertures.
* 67mm Front Filter Thread: Accepts standard 67mm screw-in front filters and accessories.

Condition and Included Accessories

* Included Accessories: Front lens cap, rear lens cap, and dedicated lens hood included.