85mm f / 1.4 dg dn art sony e-mount

A classic portrait target updated for Sony E-Mount Full-Frame Mirrorless Systems, the Sigma 85mm F / 1.4 DG DN is a first of the Art Series characterized by its advanced optical design and updated, from an elegant profile and bright design. The maximum opening f / 1.4 allows you to work in low light conditions and also provides greater control over the depth of field to obtain reduced field depth effects. The optical layout incorporates a series of low dispersion elements, aspersals and high refractive index and its large diameter design reaches a considerable degree of clarity and sharpness with distortion and well-controlled aberrations. Furthermore, a super multilayer coating improves the quality of the image by suppressing the lens reflexes and ghost images to improve the contrast and fidelity of colors in conditions of strong lighting.

Optic balance is a refined external design, which has a physical opening ring, which can be de-clicked or locked, along with a dedicated focus mode switch and the AFL button for an intuitive and tactile control. For the autofocus, a step-by-step motor is used which maintains a light and compact design, while promoting quick and almost silent focusing performance for both photos and video applications. Furthermore, the lens is equipped with a 11-sided rounded diaphragm for a uniform bokeh quality and the lens housing is also watertight to adapt to work in adverse conditions.

As part of the Art line within the Global Vision series in Sigma, this goal is designed to achieve truly remarkable optical performance and is ideal for creative and artistic applications.
The vertical objective is designed for Sony E-Mount Full-Frame mirrorless cameras, but can also be used with the APS-C models in which it provides an equivalent focal length of 127.5 mm.
The maximum light opening f / 1.4 is particularly suitable for working in available light conditions and offers extended control over the depth of field to isolate the subject with selective focus.
Five special low dispersion elements (SLD) greatly reduce color aberrations and color fringes for greater clarity and precision of color.
An aspherical element and four high refractive index glass elements control spherical aberrations and distortion for greater sharpness and an accurate yield.
A super multilayer coating was applied to the objective elements to minimize the ghost reflexes and images and help produce images rich in contrast and neutral from color, even in backlight conditions.
The integrated stepper motor carries out a quick and silent automatic focus, further integrated by an AF algorithm optimized to produce more fluid focusing performance.
The manual opening ring can be de-clicked for a switching of fluid and silent opening for the benefit of video applications. Furthermore, it is also possible to use a dedicated diaphragm ring lock switch to prevent accidental displacement of the diaphragm setting.
The embedded automatic focus lock button (AFL) to which additional functions can be assigned expands the range of operations available on the lens.
The diaphragm at eleven rounded slats contributes to a uniform and pleasant bokeh quality.
Weather-resistant construction with a brass bayonet that offers better assembly and rigidity precision.