Perfect for hand-held shooting, a 500mm lens with unparalleled optical performance
The latest optical design using exclusive low-dispersion glass elements has succeeded in achieving both an extremely compact lens construction and high optical performance with excellent correction of aberrations. In addition to its size that allows hand-held shooting, the high-speed AF with HLA (High-response Linear Actuator) and the OS2 optical stabilization algorithm support comfortable shooting.

High optical performance and compact lens construction
The latest optical design has succeeded in significantly downsizing the optical system for a 500mm ultra-telephoto lens. By utilizing exclusive low-dispersion convex elements at the front of the lens, the lens delivers both a high aberration correction capability and a short overall length. The high level of production technology at SIGMA’s only manufacturing base, the Aizu factory, provides the exacting precision necessary for processing the exclusive low-dispersion glass elements with a large aperture. The lens has excellent correction of all aberrations, especially axial chromatic aberration, which cannot be corrected by the camera body, ensuring a stable high resolution from the centre to the periphery of the image.

Excellent backlight resistance
The SIGMA 500mm F5.6 DG DN OS | Sports uses refractive lenses in its optical system to prevent flare and ghosting that are characteristics of diffractive optical elements, allowing for clear images without concern for flare or ghosting even in backlit conditions or when a light source is included in the image. Furthermore, measures are taken against all conditions of incident light based on state-of-the-art simulation technology.

High-speed AF with a linear motor HLA
A linear motor HLA (High-response Linear Actuator) is used for the actuator, which is characterized by its high driving accuracy owing to the advanced electronic control, as well as its quietness. The HLA enables fast and accurate autofocus even in ultra-telephoto photography, such as sports and bird, where extremely precise focusing is required.

OS2 algorithm in optical stabilizer function
The latest OS2 optical stabilization algorithm provides an outstanding image stabilization effect of 5.0 stops^*. The lens is equipped with two OS modes: Mode 1 is suitable for general shooting, and Mode 2 is ideal for panning shots of motorsports and other sports. In Mode 2, SIGMA’s Intelligent OS, an algorithm specially designed for panning shots, enables effective image stabilization even when the camera is moved vertically or diagonally, irrespective of the horizontal and vertical orientation. This ensures that the subject’s movement can be captured without losing the panning shot effect.
^{*Based on CIPA guidelines (Measured at 500mm with a 35mm full-frame image sensor)}

Compact, lightweight and excellent build quality
The lens body has been designed to be small and lightweight in line with the optical system, which has been made significantly more compact. Not only is the lens easy to handle in hand-held use, but it also has the weather resistance of SIGMA’s Sports line specifications and the excellent build quality that SIGMA prides itself on in terms of texture and the operating quality of each ring and control.

High-precision TSC^* parts enable both high performance and compact, lightweight design
In order to achieve such a compact, lightweight and robust body, materials such as TSC and magnesium have been used in appropriate places. In particular, the production of a large TSC part that integrates functions as an internal structure, as well as an exterior part to reduce size and weight of the lens are manufactured with micron-level precision and they also have a sleek finish that gives the lens its premium feel. The sophisticated processing and production technology of the Aizu factory, SIGMA’s only manufacturing base in Japan, enables the high degree of precise production and ensures the high performance and durability of the lens.
^{*TSC (Thermally Stable Composite) is a type of polycarbonate with a thermal expansion rate similar to that of aluminium. It has a high affinity to metal parts which contributes to high quality product manufacturing.}

Weatherability of Sports line specifications
The mount connection, manual focus ring, switches and exterior connection are all dust and splash resistant to prevent dust and dirt from entering the lens. Further, the front element of the lens features a water and oil repellent coating to facilitate maintenance when water droplets or dust adhere to the lens.

Cover-type lens hood included
A lightweight, high-strength, exclusive cover-type lens hood made of TSC is included. The tip of the hood is rubberized to protect the lens from abrasion and scratches caused by placing the lens upside down.

Full range of customizable functions
Equipped with a Focus Limiter switch, the lens enables users to limit the focus driving range during AF when necessary, allowing quick and precise focusing. Further, the lens features three AFL buttons which can be assigned to a range of functions via the menu on selected cameras. The AFL buttons are easy to operate regardless of how the camera is oriented, and make accessing important settings quick and easy.

Equipped with an aperture ring
In addition to an aperture ring, the lens is also equipped with an aperture ring click switch and an aperture ring lock switch, allowing for aperture operation suited to the shooting application.

Detachable tripod socket
The lightweight and sturdy magnesium alloy tripod socket is Arca-Swiss compatible. The detachable socket comes with a ring that clicks into position at 90° intervals.