Sigma 70mm f/2.8 DG Macro Art Lens for Leica L

The Leica L-mount 70mm f/2.8 DG Macro Art Lens from Sigma is a real 1:1, life-size macro lens well-suited for close-up and macro subjects. It has been optimised for noteworthy image quality at close working range. This short-telephoto prime, which is a part of the prestigious Art series of lenses, is distinguished by its sophisticated optical design, which uses two FLD elements, two SLD elements, one element with anomalous partial dispersion and a high refractive index, as well as two aspherical elements to reduce chromatic and spherical aberrations for high clarity, sharpness, and colour accuracy. Additionally improving image quality, a Super Multi-Layer Coating reduces lens flare and ghosting for better contrast and colour accuracy in bright lighting settings. A rounded nine-blade diaphragm also helps to create a pleasant bokeh effect.

A coreless DC motor that provides quick and precise autofocus performance as well as full-time manual focus override is advantageous to the photographic assets. For durability in a variety of environments, the physical design makes use of Thermally Stable Composite material. Rigidity and mounting accuracy are also provided by a brass bayonet mount.

This lens, which is a component of Sigma's Global Vision series' Art line, is made to produce remarkably noteworthy optical performance and is best suited for artistic and creative applications.

This short-telephoto prime lens, which is made for full-frame Leica L-mount mirrorless cameras, may also be used with APS-C cameras, giving an image with a focal length of 105mm.

The optical design includes one anomalous partial dispersion/high refractive index element, two F Low Dispersion (FLD) elements, two Special Low Dispersion (SLD) elements, and two SLD elements. These elements help to lessen colour fringing and chromatic aberrations for improved clarity and colour accuracy.

To reduce distortion and spherical aberrations as well as increase overall sharpness and precise rendering, two aspherical components are used.

In order to work with close-up subjects, true macro design offers a life-size 1:1 maximum magnification and a 10.2" minimum focusing distance.

For the purpose of reducing lens flare and ghosting and helping to produce contrast-rich, color-neutral imagery even in backlit situations, lens elements have been coated with a Super Multi-Layer Coating.

A nine-blade rounded diaphragm helps create bokeh that is smooth and aesthetically pleasing.

To achieve autofocus quickly and precisely, a coreless DC motor is required. Increased and controllable focus adjustment is also made possible by an upgraded focusing algorithm, full-time manual focus override, huge angle of rotation, and focus-by-wire technology.

To achieve greater precision and use in a wide range of temperature fluctuations, the lens is built using a Thermally Stable Composite (TSC) material in addition to conventional metals.

Brass was used to build the bayonet mount, ensuring precision and longevity. The mount's design also includes rubber sealing to make it splash- and dust-resistant.

When used with the additional 65mm Macro Flash Adapter, it is compatible with the optional EM-140 DG Macro Ring Flash to provide even lighting at tight working range.

Compatible with the TC-1401 and TC-2001 Teleconverters, which are optional and increase the lens's effective focal length while maintaining autofocus.

Specification

Focal Length : 70mm

Maximum Aperture : f/2.8

Minimum Aperture : f/22

Lens Mount : Leica L

Lens Format Coverage : Full-Frame

Angle of View : 34.3°

Minimum Focus Distance : 10.16" / 25.8 cm

Maximum Magnification : 1x

Optical Design : 13 Elements in 10 Groups

Diaphragm Blades : 9, Rounded

Focus Type : Autofocus

Image Stabilization : No

Filter Size : 49 mm (Front)

Dimensions (ø x L) : 2.79 x 4.17" / 70.8 x 105.8 mm

Length at Maximum Extension : 5.18" / 131.45 mm