Sigma has unveiled its 50-120mm F2.8 DC OS C lens, completing a trinity of f/2.8 zoom lenses designed for APS-C mirrorless cameras. Announced for release on October 22, 2026, the lens will be available in mounts for Sony E, Canon RF, and Fujifilm X systems, offering creators a consistent, high-performance option across major platforms. Weighing just 13.4 ounces (380 grams), the lens combines portability with a constant f/2.8 aperture, making it well-suited for low-light photography and videography where shallow depth of field is desired.

The 50-120mm focal length provides a 75-180mm equivalent field of view on APS-C sensors, positioning it as a versatile tool for portraiture, events, travel, and hybrid content creation. Its compact design and lightweight construction appeal to mobile creators who prioritize agility without sacrificing optical consistency. As part of Sigma’s DC OS C series, the lens incorporates optical stabilization to help reduce camera shake, particularly beneficial when shooting handheld in dim environments or at longer focal lengths.

While the source does not detail specific autofocus mechanisms or sensor technologies, Sigma’s recent lens lineup has emphasized fast, quiet focusing systems compatible with modern mirrorless cameras’ advanced AF capabilities. For Sony users, this compatibility is especially relevant given the brand’s industry-leading real-time tracking and eye-detection autofocus, which pair effectively with lenses that offer responsive and accurate focus performance. Sony’s professional-grade cameras, known for their cutting-edge sensor technology and rapid subject acquisition, benefit from lenses that can keep pace with their speed and precision.

Priced at $799 / £699 (approximately AU$1,300), the 50-120mm F2.8 fills a growing demand for affordable, high-quality f/2.8 zooms in the APS-C segment. By completing this trinity—following Sigma’s earlier 18-35mm and 30-100mm f/2.8 offerings—the company provides creators with a cohesive system of wide-to-tele zoom options, all sharing the same constant aperture and filter size. This launch reinforces Sigma’s commitment to expanding accessible, professional-grade tools for the evolving creator ecosystem.