Sony FE 100mm f/2.8 STF GM OSS

TheSony FE 100mm f/2.8 STF GM OSS is a sealed, stabilized, high-luminosity, professional portrait lens from the GM series that is designed for both Full Frame and APS-C Sony compact system cameras with E-Mount mount.

TheSony FE 100mm f/2.8 STF GM OSSis a sealed, stabilized, high light, professional portrait lens from the GM (G Master) professional lens line designed for both Full-Frame and APS-C Sony digital compact system cameras with E-mount bayonet. The 100mm focal length combined with the f/2.8 aperture and 11-blade perfectly contoured aperture are ideal for teasing the subject away from the background. Thelens is ideal for portrait photography, street photography, photojournalism, documentary photography, as well as for all photographers who require top image quality for their work and a lens capable of working in all light and weather conditions

Important features
-Premium professional portrait lens with Sony E-Mount mount, designed for Sony compact system cameras with Full Frame sensor
-Lens belongs to the premium professional G Master (GM) lens line
- Thelens offers a 100mm focal length on Sony Alpha Full Frame cameras, but can also be mounted on Sony Alpha APS-C cameras where the lens has a 150mm focal length (equivalent to 35mm format)
- Theangle of view when mounted on a Full Frame camera is 24° and on an APS-C camera it is 16°
-Premium optical design with superior image quality consisting of 14 optical elements arranged in 10 optical groups
- Thelens optical system is equipped with one aspherical lens for optical distortion correction, 1 lens of special low dispersion ED glass which suppresses chromatic aberration and improves contrast transmission and one APD member/filter which allows slow reduction of light transmission towards the edges
-Front and rear lens elements are coated with Nano AR Coating to reduce flare and improve contrast transfer when shooting into backlight
-High f/2.8 lens aperture allows shooting even in low-light environments
-11-blade contoured aperture with a perfectly circular aperture for the most perfect background blur (bokeh) can be adjusted in 1/3 EV steps
-Powerful 5-axis OSS optical image stabiliser responds quickly and accurately to shake when shooting handheld, effectively extending exposure time by up to 4 EV stops
-Piezoelectric focusing motor enables noiseless and fast focusing
-Sealed and highly durable magnesium alloy construction features a light weight of only 700g, making the lens one of the lightest lenses in its class
-72mm thread for conventional circular filters

Detailed description of lens features
Lens Application
The Sony FE 100mm f/2.8 STF GM OSS, is a lightweight, professional portrait lens with superior image quality, a powerful optical stabilizer, sealed construction, aspherical, ED and APD elements in the optical system, Nano AR anti-reflective coatings and high aperture. With these features, you can carry it with you anytime, anywhere and use it in any light or weather conditions. These are exactly the conditions of use that every professional has to reckon with.That's why this lens is an excellent choice for all photographers who need top-notch shots, portrait focal length, maximum sharpness and image quality

Portrait focal length and superior optical design
The lens features a 100mm focal length when used with Full Frame and a 150mm focal length when used with Sony APS-C cameras. This corresponds to an angle of view of 24° and 16° respectively. The optical construction of the lens is composed of 14 optical elements that are arranged in 10 optical groups. The optical system includes 1 aspherical lens to compensate for spherical distortion, 1 lens made of special low dispersion ED glass with minimal light scattering and 1 APD member/filter. The optical system designed in this way provides high resolution and sharpness to the edges meeting the demanding requirements of the MTF50 chart (can resolve up to 50 lines per 1 millimeter).Theoptical system of the lens can focus from a distance of 57cm

APD member - apodization guaranteeing exceptional background defocus (bokeh):
The APD optical element is a special type of filter that allows the slow reduction of light transmission towards the edges. It attenuates the edges of spot images, resulting in exceptionally smooth and beautiful bokeh in both the background and foreground. In doing so, the appearance of double-edge effects is kept to a minimum

Nano AR anti-reflective coating:
The lens lens surface is equipped with the original Nano AR coating, which suppresses unwanted reflections and flare that cause unwanted lighting and image doubling, especially when shooting into backlight. The result is consistently high contrast and clarity with rich blacks in a wide range of shooting situations

High lens aperture and depth of field control:
The lens' high f/2.8 aperture is ideal for shooting in low-light environments as well as for controlling the depth of field in an image. The aperture can be adjusted from f/2.8 to f/20 in 1/3 EV steps. The aperture consists of 11 contoured blades that create a perfectly circular aperture. This allows you to create stunning images with the subject in focus in the foreground against a perfectly out-of-focus background (so-called bokeh)

Optical Image Stabilization:
The lens is equipped with a very powerful 5-axis Optical Image Stabilization (OIS), which allows you to maintain exposure times that are up to 4EV stops longer than those you would maintain with Optical Stabilization turned off

Fast and silent focusing:
For autofocusing, the lens is equipped with a fast piezoelectric focusing motor, In its work the motor is almost noiseless, extremely fast and most importantly reliable. The motor itself is activated by commands from the camera's focusing system, which works on the principle of phase detection

Mechanical construction of the lens and its weather resistance:
The lens is made of lightweight and very strong magnesium alloys. The front part of the lens is dominated by a thread for classic circular filters with a diameter of 72mm, and the rear part is formed by the Sony E-Mount bayonet, which ensures high accuracy of the lens mount even after years of use. All joints and moving parts of the lens are perfectly sealed with a series of gaskets for perfect sealing of the camera against dust, frost (-10° C) and running water (rain, humidity). The lens is characterized by its light weight and at 85.2mm diameter and 118.1mm length, it weighs only 700g