he SIGMA 17mm F4 DG DN | Contemporary delivers supreme compactness in the widest "I series" lens to date. Announced concurrently with the 50mm F2 DG DN | Contemporary, this expands the I series to 9 lenses ranging from 17mm to 90mm. This super-compact, ultra-wide angle lens weighs just 220g with a length of 48.8mm, and is designed specifically for full-frame mirrorless systems.

The SIGMA 17mm F4 DG DN | Contemporary is an exceptional lens in terms of angle of view, optical performance, and build quality, with a design inspired by SIGMA Cine lenses. As an I series lens, it features a metal barrel with knurled focus ring, aperture ring and lens hood. Both metal magnetic and snap-on lens caps are provided.

The 17mm F4 DG DN | Contemporary offers high optical performance and close-up shooting capability that greatly expands the range of creative expression.

By shortening the overall length of the lens and making changes to the focus configuration, the lens is capable of focusing as close as 12cm with an impressive magnification ratio of 1:3.6, allowing for unique close-up photographs with expansive backgrounds, making it particularly appealing to vloggers, hikers, landscape photographers and more. A stepping motor offers swift, precise AF for both still and video applications. Furthermore, the lens has minimal focus breathing, so that users are able to capture natural images with virtually no compositional changes.

Compact, lightweight and high-performance ultra-wide-angle 17mm lens with an impressive minimum focusing distance
Using the latest technology, the 17mm had been created without compromise, despite its challenging design concept. Its wide-angle of view creates impactful landscape images with a unique perspective and, thanks to its minimum close focusing distance of 12cm, the lens can be enjoyed in a variety of alternative ways, including close-up photography and hand-held selfies.

The optical design has been created exclusively for mirrorless camera systems, which helps reduce lens flare and ghosting that results in excellent image rendering. The all-metal lens barrel highlights SIGMA's craftsmanship and attention to detail, making the SIGMA 17mm F4 DG DN | Contemporary a pleasure to use on every shoot.

Features

"Ultra-wide-angle lens" that matches the optical performance standards set by the SIGMA Contemporary line of lenses.
The lens construction consists of two SLD glass elements and three aspherical lens elements. Aspherical lenses are used for both the front and rear optics. This not only keeps the size of the lens compact but also helps with correcting lens aberrations. As a result, the lens features a 55mm filter thread (which is smaller than comparable lenses of similar focal lengths) which makes it easy to change filters between SIGMA I series lenses that share the same filter size.

Its construction also helps minimize flare and ghosting that is commonly found in ultra-wide-angle lenses, creating clear images in any environment. This is a lens with truly modern performance, thanks to the advanced processing and production technologies at SIGMA's only production facility in Aizu.

A highlight of using the 17mm is the impressive minimum focusing distance of 12cm. Capture close-up macro style images in remarkable detail with expansive backgrounds. It is also suitable for selfies and vlogging, where items need to be shown at an arms-reach. A quiet, high-speed stepping motor drives the AF delivering fast and accurate results in both stills and video.

Beyond "beautiful pictures"-the value provided by the SIGMA's I series
The SIGMA I series features full-frame compatible lenses that offer new value to mirrorless systems. The combination of superb optical performance with a level of compactness that is perfectly suited to smaller and lighter modern mirrorless cameras will bring you new opportunities for a perfect shot. SIGMA is aware that in today's world we have a wide range of camera choices, especially with the increase in mobile phone ownership.

But with many photographers looking for something more than something that simply captures images when they choose to own a camera and lens, I series lenses offer the ultimate combination of superb optical performance, outstanding usability and compact form-factor.

Exceptional I series build quality with a compact form-factor
All I series lenses have an all-metal construction. The precision-cut aluminum parts not only give the barrel a sleek, stylish finish, but provide superb durability that improves the quality of the entire product. Metal materials are also used in internal structures that slide with the operation ring for added robustness. These high-precision components crafted with SIGMA's cutting-edge metalworking technology are also used in SIGMA's CINE LENS line-up for professional cinematographers and provide a tactile, ergonomic feel that make the lens a pleasure to use.

What is more with the I series is that this high build quality is condensed into a palm-sized lens body. The SIGMA 17mm F4 DG DN | Contemporary is one of the smallest in the series. Combine with multiple I series lenses to create a remarkably compact shooting system that is lightweight and small in size.