CONTEMPORARY
17mm F4 DG DN
| Camera Type | Mirroless |
|---|---|
| Corresponding Mount | L-Mount, Sony E-Mount |
| Sensor Format | Full-frame [DG] |
| Lens Construction | 9 elements in 8 groups |
| Angle of View | 103.7° |
| Number of Diaphragm Blades | 7 (rounded diaphragm) |
| Minimum Aperture | F22 |
| Minimum Focusing Distance | 12cm / 4.8in |
| Maximum Magnification Ratio | 1:3.6 |
| Filter Size | φ55mm |
| Dimensions (Diameter × Length) | L-Mount：φ64.0mm × 48.8mm / 2.5in. × 1.9in. Sony E-mount：φ64.0mm × 50.8mm / 2.5in. × 2.0in. |
| Weight | L-Mount：225g / 7.9oz. Sony E-mount：220g / 7.8oz. |
| Edition Number | C023 The three-digit code on the surface of the lens is to indicate the year the lens was first released. |
| Supplied Accessories | ・Magnetic metal lens cap LCF55-01M ・LENS HOOD LH576-03 ・FRONT CAP LCF-55 III ・REAR CAP LCR II |
| Mount / Product Barcode | L-Mount：00-85126-41569-3 Sony E-mount：00-85126-41565-5 |
| Camera Compatibility | Link |
| *L-Mount is a registered trademark of Leica Camera AG. *This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation. |
“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 φ55mm 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.
*In addition to the 17mm F4 DG DN | Contemporary, I series lenses with a φ55mm filter thread include the 24mm F3.5 DG DN | Contemporary, 45mm F2.8 DG DN | Contemporary, and 90mm F2.8 DG DN | Contemporary (as of April 2023).
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 people look for something more than a mere act of “taking pictures” when they choose to own a camera and lenses, I series lenses offer the ultimate combination of superb optical performance, outstanding usability and compact form-factor. Sigma’s excellence in development and production technologies has been built up since our founding in 1961 and became increasingly sophisticated with the introduction of the Sigma Global Vision brand in 2012. With this as a base, Sigma has given careful thought to the quality of the products, the feeling of using it and the pleasure of owning it. This is how the I series was born.
I series Special Movie I see what you see.
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.
Magnetic metal lens cap
※ The image is 35mm
※ Cannot be used when a filter is attached.
I series lenses are accompanied by a dedicated magnetic metal lens cap*, in addition to a normal plastic cap. This dedicated metal cap clips to the front surface of the lens magnetically. It is no exaggeration to say that this meticulously crafted cap represents the finishing touch for the I series.
*Except Sigma 45mm F2.8 DG DN | Contemporary
Magnetic metal lens cap holder LENS CAP HOLDER CH-11 (sold separately)
When a cap is removed from the lens it should have a proper place where it can be kept. Using this as a starting point, a cap holder using the magnetic force of the dedicated cap was created.
With the cap attached to the ring plate, and the plate clipped to a bag or belt, the cap is always within easy reach and is less likely to get lost. Plus, its elegant design is a stylish addition to a photographer’s equipment.
The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.
*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed.
DIFFRACTION MTF
GEOMETRICAL MTF
The lens is capable of smooth, quiet and high-speed AF made possible by a stepping motor, as well as supports Face/Eye Detection AF and video AF.
Sigma’s own Super Multi-Layer Coating suppresses flare and ghosting by preventing reflections with in the lens. All lenses in the current Sigma range feature this original technology. In digital cameras, flare and ghosting may also be caused by reflections between the image sensor and lens surfaces. Here too, Sigma’s Super Multi-Layer Coating is highly ef fective, assuring images of outstanding contrast.
Aperture ring, designed to help users work intuitively
Using this swich, it is possible to switch the focus mode between AF and MF.
Linear focus / Non-linear focus (for L-Mount only）
A focus movement method of interchangeable lenses for mirrorless cameras (DN lens) in relation to the rotational angle of the focus ring during manual focusing.
With “non-linear focus,” the amount of focal point movement varies depending on the focus ring rotational speed.
With linear focus, if the focus ring rotational angle is the same, the amount of focal point movement remains the same regardless of the focus ring rotational speed.
The lens mount incorporates rubber sealing to protect the mount from dust and water drops.
Lens construction: 9 elements in 8 groups with 2 SLD and 3 aspherical lens elements
Inner focus system
Compatible with high-speed autofocus
Compatible with lens-based optical correction
Support DMF and AF+MF
Compatible with AF assist (Sony E-mount only)
Petal-type lens hood (LH576-03)
Magnetic metal lens cap (LCF55-01M)
Compatible with Sigma USB DOCK UD-11 (sold separately / for L-Mount only)
Designed to minimize flare and ghosting
7-blade rounded diaphragm
High-precision, durable brass bayonet mount
| Camera | SONY α7R V |
|---|---|
| Shutter Speed | 1/125s |
| Lens F number | F11 |
| ISO | 500 |
| Focal lenghth | 17mm |
| Photographer | Masato Ono |
| Camera | SIGMA fp L |
|---|---|
| Shutter Speed | 1/60s |
| Lens F number | F5.6 |
| ISO | 800 |
| Focal lenghth | 17mm |
| Photographer | Takashi Shikano |
| Camera | SIGMA fp L |
|---|---|
| Shutter Speed | 1/250s |
| Lens F number | F4 |
| ISO | 100 |
| Focal lenghth | 17mm |
| Photographer | Takashi Shikano |