Sigma 28-105mm f/2.8 DG DN | Art Lens for Full-Frame
Sigma has announced its newest addition to the Art series, the 28-105mm f/2.8 DG DN | Art lens, tailored for full-frame mirrorless cameras. This lens offers a constant f/2.8 aperture across its flexible zoom range, promising high performance for a wide variety of photographic styles.
Overview
The Sigma 28-105mm f/2.8 DG DN | Art is a versatile full-frame zoom lens, ideal for shooting anything from wide-angle landscapes to telephoto portraits. Its constant f/2.8 aperture across the 28mm to 105mm range makes it a great choice for different lighting situations and creative applications. The lens also features Sigma’s advanced optical technology, including a High-response Linear Actuator (HLA) for swift and precise autofocus.
Designed with both photographers and videographers in mind, this lens is equipped with a dust- and splash-resistant construction, making it well-suited for outdoor use. The front element has water- and oil-repellent coatings to keep it clean in adverse conditions. It is available for Sony E mount and L mount systems, offering photographers and videographers a new lens option that combines wide-angle and telephoto capabilities with a fast aperture.
Key Specifications
- Focal length: 28-105mm
- Maximum aperture: f/2.8
- Minimum aperture: f/22
- Lens construction: 18 elements in 13 groups (2 FLD, 1 SLD, 5 aspherical elements)
- Angle of view: 75.4° – 23.3°
- Autofocus system: High-response Linear Actuator (HLA)
- Aperture blades: 12 (rounded diaphragm)
- Minimum focusing distance: 40 cm / 15.8 in.
- Maximum magnification ratio: 1:3.1 at 105mm
- Filter size: 82mm
- Dimensions: 87.8 x 157.9 mm / 3.5 x 6.2 in.
- Weight: 995 g / 35.1 oz.
- Mount compatibility: Sony E mount, L mount
- Weather resistance: Dust- and splash-resistant structure
- Coatings: Nano Porous Coating, Super Multi-Layer Coating, water- and oil-repellent coating (front element)
- Other features: Aperture ring with click/declick switch, two customizable AFL buttons, zoom lock switch
Design and Build
The 28-105mm f/2.8 lens is crafted for exceptional performance in a compact and lightweight form. Weighing just under 1 kg, it’s easy to handle for handheld shooting while providing a constant f/2.8 aperture. A magnesium alloy barrel near the mount helps to keep the weight down without compromising on durability.
The lens features a 12-blade rounded diaphragm for beautiful bokeh, and includes advanced optical elements like two FLD and one SLD elements, which help to minimize aberrations and produce sharp images across the frame. The inclusion of five aspherical elements also contributes to reducing the lens size without sacrificing optical quality.
Performance Features
With a minimum focusing distance of 40 cm and a maximum magnification ratio of 1:3.1 at the telephoto end, this lens is versatile enough for detailed close-up shots. The High-response Linear Actuator (HLA) ensures quick and accurate autofocus, making it suitable for fast-paced action or video work.
Additionally, advanced lens coatings reduce flare and ghosting, enhancing contrast and clarity even in challenging lighting conditions. The lens also minimizes focus breathing, an important feature for videographers who require consistent framing while adjusting focus.