Sigma 28-105mm T3 Cine Zoom Lens with AF (L-Mount, Feet)

Overview

The Sigma 28-105mm T3 Cine Zoom Lens with AF (L-Mount, Feet) is a full-frame cine zoom built for filmmakers who want the flexibility of a broad focal range together with selectable autofocus performance. Based on Sigma's popular DG DN Art optical design, it combines strong image quality, cinema-style handling, and modern production versatility for narrative, documentary, gimbal, and handheld shooting.

Covering a practical 28 to 105mm range with a constant T3 maximum aperture, this lens is designed to move smoothly between wide, normal, and short telephoto framing. Its autofocus capability, cine-standard gearing, rounded 12-blade iris, and professional mechanical design make it a strong choice for contemporary hybrid cinema workflows.

Core Features

• This full-frame cine zoom provides a versatile 28 to 105mm focal length range for wide shots, interviews, portraits, and detail coverage.
• Its constant T3 maximum aperture enables consistent exposure throughout the zoom range.
• Selectable autofocus and manual focus operation support fast-moving productions, handheld work, gimbal setups, and documentary shooting.
• A linear motor HLA system delivers responsive autofocus tracking for moving subjects and rapid focus transitions.
• The rounded 12-blade iris helps produce soft, cinematic bokeh.
• Cinema-style mechanics include a limited-rotation focus ring, a clickless iris ring, and 0.8 MOD gears for focus, iris, and zoom control.
• A 95 mm front diameter and 82 mm filter thread support compatibility with a wide range of matte boxes and screw-in filters.
• The removable support foot includes a 1/4"-20 thread for integration with optional lens support systems.

Autofocus for Modern Cine Workflows

Unlike traditional manual-only cine lenses, this model adds autofocus capability for productions that demand faster subject tracking and greater operating flexibility. It is especially useful for action sequences, documentary capture, gimbal operation, and other situations where maintaining manual focus can be more challenging.

Advanced Optical Design

Using the optical system of Sigma's DG DN Art still lens, this cine zoom is designed to deliver strong sharpness, attractive bokeh, and controlled flare and ghosting across the zoom range. The result is a clean, polished image suitable for high-end production work.

Professional Mechanical Construction

The lens adds cinema-focused mechanics to Sigma's proven Art-series rendering and reliability. Standard 0.8 MOD gears, damped control rings, and reduced metallic noise at the ends of travel help support smoother operation for assistants and operators working in professional environments.