Sigma 70mm f2.8 Art Lens for Sony E
Sigma 70mm f2.8 Art Lens for Sony E
Sigma 70mm
Sigma 70mm f2.8 DG Macro Art for Sony E DSLR Camera Lens. The Sigma Art Lens features an extending, floating and a two-group focus mechanism to produce top-level performance which helps to reduce the aberration, in order to produce optimal results at any focus distance, it also include two FLD glass elements, two SLD glass elements and one element with a high rate of anomalous partial dispersion to effectively reduce axial chromatic aberration.
Designed to Minimize Flare and Ghosting
Sigma has incorporated a Super Multi-Layer Coating in the 70mm f2.8 DG Macro lens, that helps reduce the flare and ghosting when photographing images, even when shooting in backlit conditions. Photographers will appreciate this as it contributes to high quality and razor-sharp images.
Focus-by-wire System for Comfortable and Precise Focusing
Sigma has packed advanced features in the 70mm f2.8 lens such as the focus-by-wire system that removes the direct mechanical connection between the focus ring and the focus drive system.
A brand new coreless DC motor that allows you to adjust the focus with optimal speed and low noise has also been incorporated which is required for macro photography.
Fast Autofocus with Full-Time Manual Focus
The lens can easily be switched to manual focus by simply rotating the focus ring, all thanks to its full-time manual focus function.
Weather-Sealed Construction
The Sigma Macro 70mm f2.8 Art lens features rubber sealing that helps protect the mount from dust and water drops.
Rounded Diaphragm
The Sigma lens features a rounded 9-blade diaphragm that creates attractive bokeh in the out-of-focus areas of the image.
High-precision, Rugged Brass Bayonet Mount
An exceptional durable lens is all thanks to its brass mount which combines high precision with a rugged construction.
Sigma 70mm
In recent years, macro lenses in the standard range have tended to employ inner focusing with the goal of maximizing autofocus speed. In contrast, the new SIGMA 70mm f2.8 DG MACRO Art lens is designed to prioritize optical performance, fulfilling the demanding image quality requirements that define the Art line. In the standard to mid-telephoto range, it delivers stunning resolution and incredible clarity that greatly exceed expectations for a macro lens.
The coreless DC motor further enhances image quality, while an optimized algorithm helps offer extremely smooth autofocus performance for a weightier, high-performance lens.
Photography enthusiasts will recall a certain legendary, razor-sharp macro lens—the SIGMA MACRO 70mm f2.8 EX DG—and be glad to learn it is available in a new form, updated with outstanding Art line quality.
Exclusive low-dispersion glass
The degree to which light is refracted by glass depends on the light’s wavelength. This fact causes different colours of light to focus at slightly different points. The result is chromatic aberration, the colour fringing that is particularly noticeable in telephoto lenses.
Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Y
et residual chromatic aberration known as “secondary spectrum” may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, SIGMA lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD (“F” Low Dispersion).
In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives SIGMA lenses superlative image rendition undiminished by residual chromatic aberration.
Optimized for notable image clarity at close working distances, the Sony E-mount 70mm f2.8 DG Macro Art Lens from Sigma is a true 1:1, life-size macro lens well-suited for close-up and macro subjects. As a member of the esteemed Art series of lenses, this short-telephoto prime is also distinguished by its sophisticated optical design that makes use of two FLD elements, two SLD elements, one anomalous partial dispersion/high refractive index element, and two aspherical elements to limit both chromatic and spherical aberrations for high clarity, sharpness, and colour accuracy.
Sigma 70mm
A Super Multi-Layer Coating also enhances image quality by suppressing lens flare and ghosting for improved contrast and colour fidelity in strong lighting conditions. Additionally, a rounded nine-blade diaphragm contributes to a pleasing bokeh quality.
Benefitting the imaging assets is a coreless DC motor that offers quick and accurate autofocus performance along with full-time manual focus override. The physical design utilizes Thermally Stable Composite material for durability in a wide range of environments, and a brass bayonet mount also offers rigidity and mounting precision.
- As part of the Art line within Sigma's Global Vision series, this lens is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications.
- Short-telephoto prime, this lens is designed for full-frame Sony E-mount mirrorless cameras, however can also be used with APS-C models where it provides a 105mm equivalent focal length.
- Two F Low Dispersion (FLD) elements, two Special Low Dispersion (SLD) elements, and one anomalous partial dispersion/high refractive index element are featured in the optical design, and help to reduce colour fringing and chromatic aberrations for improved clarity and colour accuracy.
- Two aspherical elements are used to help limit distortion and spherical aberrations and also contribute to greater overall sharpness and accurate rendering.
- True macro design affords a life-size 1:1 maximum magnification along with a 10.2" minimum focusing distance to suit working with close-up subjects.
- A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and colour-neutral imagery, even in backlit conditions.
- Nine-blade rounded diaphragm contributes to a smooth and pleasing bokeh quality.
- Coreless DC motor is used for quick and accurate autofocus performance. Additionally, an updated focusing algorithm, full-time manual focus override, large angle of rotation, and focus-by-wire system enable increased and controllable focus adjustment.
- The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations.
- The bayonet mount is constructed from brass for ensured accuracy and durability. Additionally, rubber sealing is incorporated in the mount design to render it dust- and splash-resistant.
- Compatible with optional EM-140 DG Macro Ring Flash when used in conjunction with the separate 65mm Macro Flash Adapter for even lighting as close working distances.
- Compatible with optional TC-1401 and TC-2001 Teleconverters to extend the effective focal length of the lens while retaining autofocus functionality.