Key Features:
- E-Mount lens for full-frame cameras
- Aperture range: f/2.8 to f/22
- Includes two FLD and two SLD elements for reduced chromatic aberrations
- Three aspherical elements for controlling distortion
- Super Multi-Layer and Nano Porous coatings for optimal image quality
- Water- and oil-repellent front coating
- Stepping motor autofocus system
- Rounded 9-blade diaphragm for smooth bokeh
- Dust- and splash-resistant design
Sigma 28-70mm f/2.8 DG DN Contemporary Lens Overview:
The Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Sony E-Mount offers a versatile zoom range from wide-angle to portrait-length, making it an excellent option for photographers and videographers alike. With a constant maximum aperture of f/2.8, this lens performs well in low-light situations while providing more creative control over depth of field. Its lightweight and compact design sets it apart from traditional 24-70mm lenses, making it an ideal choice for those who need a high-quality, portable lens for both stills and video work.
The optical design incorporates two FLD (F Low Dispersion) and two SLD (Special Low Dispersion) elements, along with three aspherical elements, which work together to minimize chromatic and spherical aberrations, delivering sharp, clear images with improved color accuracy. The lens's focusing element is designed to be lightweight, which, combined with a fast and quiet stepping motor, ensures quick and near-silent autofocus, ideal for video recording, especially when using a gimbal or other stabilizers.
The lens also features advanced coatings, including Super Multi-Layer and Nano Porous coatings, which help suppress lens flare and ghosting to produce rich, contrasty images with true-to-life color. Additionally, a water- and oil-repellent coating on the front element ensures that the lens stays clean and free of smudges or moisture, even in challenging shooting conditions.
Additional Highlights:
- Designed for full-frame E-mount mirrorless cameras, it offers a 42-105mm equivalent focal length when used on APS-C sensor cameras.
- Constant f/2.8 aperture throughout the zoom range for low-light shooting and creative depth of field control.
- FLD and SLD elements minimize chromatic aberrations and color fringing, resulting in sharper images.
- Aspherical elements reduce distortion and spherical aberrations for improved clarity.
- Super Multi-Layer and Nano Porous coatings prevent flare and ghosting, improving contrast and color accuracy.
- The stepping motor and optimized AF algorithm provide fast, smooth, and quiet autofocus, ideal for video work.
- Minimum focus distances of 7.5" at 28mm and 15" at 70mm, offering versatile close-up shooting capabilities.
- The rounded 9-blade diaphragm creates smooth, pleasing bokeh for more visually attractive backgrounds.
- Built with a durable brass bayonet for reliable mounting and features rubber sealing for enhanced dust and splash protection.