Sigma 28-70mm f/2.8 DG DN Contemporary Lens for Leica L

KEY FEATURES

L-Mount Lens/Full-Frame Format
Aperture Range: f/2.8 to f/22
Two FLD Elements, Two SLD Elements
Three Aspherical Elements
Super Multi-Layer & Nano Porous Coatings
Water- and Oil-Repellent Front Coating
Stepping Motor AF System
Rounded 9-Blade Diaphragm
Dust- and Splash-Proof Design

SIGMA 28-70MM F/2.8 DG DN OVERVIEW

The 28-70mm f/2.8 DG DN Contemporary Lens for Leica L-Mount from Sigma is a versatile wide-angle to portrait-length zoom characterized by its f/2.8 constant maximum aperture. The design suits working in available lighting conditions while affording increased control over depth of field. More lightweight and compact than similar 24-70mm lenses, it's optical design incorporates two FLD and two SLD low-dispersion elements plus three aspherical elements that reduce a variety of aberrations to achieve high sharpness, enhanced clarity, and improved color accuracy. It features just one lightweight focusing element, which keeps the AF unit small. This, along with a quiet and fast stepping motor, makes for responsive and near-silent autofocus performance, an ideal combination for filmmakers looking for a high-performance, lightweight, and easy-to-handle camera system that works well with a gimbal or other accessories.

Each optical surface features Super Multi-Layer and Nano Porous coatings to improve contrast and color rendering by suppressing lens flare and ghosting for optimal light transmission, and an added water- and oil-repellent coating on the front optic helps keep the lens free from smudges and droplets. The weather-sealed design benefits working in trying environmental conditions, and a nine-blade rounded diaphragm contributes a pleasing bokeh quality when using wider apertures.

Standard zoom for full-frame L-mount mirrorless cameras
42-105mm equivalent focal length when used on an APS-C camera
Constant f/2.8 maximum aperture for Low light use and depth-of-field control
Two F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements reduce chromatic aberrations and color fringing
Three aspherical elements control spherical aberrations and distortion
Both Super Multi-Layer and Nano Porous coatings minimize lens flare and ghosting and produce contrast-rich and color-neutral imagery
Integrated stepping motor and optimized AF algorithm provides quick and quiet autofocus
28mm minimum focus distance: 7.5", 1:3.3 magnification
70mm minimum focus distance: 15", 1:4.6 magnification
Rounded nine-blade diaphragm for a pleasing bokeh quality
Brass bayonet for mounting accuracy and rigidity
Rubber sealing for dust- and splash-resistance

SIGMA 28-70MM F/2.8 DG DN SPECS

Focal Length	28 to 70mm
Maximum Aperture	f/2.8
Minimum Aperture	f/22
Lens Mount	Leica L
Lens Format Coverage	Full-Frame
Angle of View	75.4° to 34.3°
Minimum Focus Distance	7.5" / 19 cm
Maximum Magnification	4.6x
Optical Design	16 Elements in 12 Groups
Diaphragm Blades	9, Rounded
Focus Type	Autofocus
Image Stabilization	No
Filter Size	67 mm (Front)