Sigma 50mm F1.2 DG DN I Art lens for L mount 

Capture portraits with beautiful depth-of-field effects, moody low-light landscapes and expressive travel shots with the new SIGMA 50mm F1.2 DG DN Art lens.

The bright F1.2 aperture, reliable auto focus and lightweight construction make it a versatile photographic tool to use in any situation.

Designed with 13 rounded diaphragm blades and optics that effectively reduce aberrations, the SIGMA 50mm F1.2 DG DN | Art produces ultra sharp images with outstanding bokeh.

Its compact size and internal focus system with dual HLA motors allow for rapid and reliable focus for both still and video. Perfect for use on lightweight gimbal setups.

• Full-frame lens
• Brass mount
• 11 rounded blades
• AFL
• AF MF Switch
• Water and oil repellent*
• Super multi-layer coating
• Internal focus
• Made in Japan

Bright F1.2 aperture with outstanding optical quality

The SIGMA 50mm F1.2 DG DN | Art features a bright F1.2 aperture with a 13 rounded diaphragm blades that produces beautiful bokeh effects. Utilising the latest optical design techniques, the lens produces sharp images across the whole frame with exceptional contrast and colour. Focus breathing is also heavily-suppressed allowing videographers to capture creative shots with ease.

By correcting spherical aberration, sagittal coma flare, axial chromatic aberration, and other aberrations such as double-line bokeh, the lens produces a natural bokeh with a smooth blur and without colour bleeding from the focal plane. The lens also implements a floating focus system that improves its short-range performance. This ensures a high-level of optical quality throughout the entire focusing range.

13 diaphragm blade lens

The SIGMA 50mm F1.2 DG DN | Art is the implementation of a 13 rounded diaphragm blade design. When shooting subjects at F1.2, the aperture maintains its circular shape. Photographers can effortlessly create portraits and still life shots with impressive background separation and pleasingly round bokeh balls.

Designed to minimise focus breathing, flare and ghosting

The lens has been optimised through its optical construction and focus group arrangements to significantly suppress focus breathing. Focus shift is also minimised, creating a natural focus shift look when recording video. Flare and ghosting are also effectively reduced, even when shooting in heavily backlit environments such as street and event photography.

Lightweight design suitable for a wide range of applications

Designed to be used anytime, anywhere, the SIGMA 50mm F1.2 DG DN | Art has been constructed using new design techniques and technology to produce an incredibly lightweight and portable lens. Perfect for photographers who require lightweight kit without compromising on quality.

Unique lens and mechanical design

Effortlessly and reliably focus on your subject thanks to the newly revised focusing system. The lens features a floating focusing system that uses dual HLA (High-response Linear Actuator) motors. The use of these motors reduces the lens’s size without compromising performance. Focusing is fast, quiet and accurate, perfect for every situation.

By precisely controlling the configuration of multiple magnets, the HLA provides sufficient thrust to quickly move the lens’s large-diameter focus elements, while achieving an approximate 25% reduction in unit thickness from the previous HLA design as well as a 44% reduction in total weight.

By utilising state-of-the-art production technology at SIGMA’s manufacturing base in Aizu, Japan, each glass element has been reduced in size whilst retaining elements with a high refractive index. Four aspherical glass elements and a floating focus system are also implemented to further reduce the lens’s overall size and effectively reduce aberrations.

• AFL Button: Customisable button that can perform various functions
• Aperture ring: With a click/de-click switch and a lock switch
• Aperture ring click switch: Switch between smooth and clickable aperture ring control
• Focus ring: A large, rubberised ring with a smooth action. Focusing is internal
• Dust and splash resistant: Constructed using TSC materials and weather sealed at strategic points
• Petal-type lens hood: Cuts down on flare while limiting vignetting

Professional feature-set

The lens is equipped with an AFL button which can be assigned to a range of functions via the camera menu on supported cameras. L-Mount users can customise the button further using the UD-11 USB Dock. Effortlessly control the depth-of-field using the built-in aperture control ring and make your images stand out from the crowd. The aperture ring lock switch prevents the ring from accidental knocks. Use the aperture click switch to turn the click of the aperture ring on or off. Ideal for when shooting video and quiet scenes.

In addition to a dust and splash resistant structure, the front element of the lens features a water and oil repellent coating, allowing photographers to shoot without concern even in harsh outdoor environments.

A dedicated petal-shaped hood is also supplied. A secure locking mechanism is provided for easy attachment and removal.

* The structure is designed to be dust and splash resistant, but not waterproof. Be careful not to bring the lens in contact with a large amount of water. Water inside the lens may cause major damage and even render the lens unrepairable.