CONTEMPORARY
24mm F3.5 DG DN
| Camera Type | Mirroless |
|---|---|
| Corresponding Mount | L-Mount, Sony E-Mount |
| Sensor Format | Full-frame [DG] |
| Lens Construction | 10 elements in 8 groups |
| Angle of View | 84.1° |
| Number of Diaphragm Blades | 7 (rounded diaphragm) |
| Minimum Aperture | F22 |
| Minimum Focusing Distance | 10.8cm / 4.3in |
| Maximum Magnification Ratio | 1:2 |
| Filter Size | φ55mm |
| Dimensions (Diameter × Length) | L-Mount：φ64mm x 48.8mm / φ2.5in. x 1.9in. Sony E-mount：φ64mm x 50.8mm/ φ2.5in. x 2.0in. |
| Weight | L-Mount：225g / 7.9oz. Sony E-mount：230g / 8.1oz. |
| Edition Number | C021 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 LH576-01 ・FRONT CAP LCF-55mm III ・REAR CAP LCR II |
| Mount / Product Barcode | L-Mount：00-85126-40369-7 Sony E-mount：00-85126-40365-9 |
| 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. |
I series | A new photographic experience, “Premium Compact Primes”for mirrorless users
The Sigma I series features full-frame-compatible lenses that offer mirrorless users a new and better alternative, both in the experience of shooting with the lens and in the impressive results it is able to achieve.
One of the key advantages of mirrorless cameras is their smaller form-factor, and this new 24mm optic is designed to be perfectly matched to these more compact systems without sacrificing performance. This combination of superb optical quality with exceptional portability, not previously possible with DSLR systems, will bring new opportunities to this and future generations of photographers.
Simultaneously, Sigma is aware that, in this day and age when we have such huge diversity when it comes to what we use to photograph, as represented by smartphones, people look for something more than a mere act of “taking pictures” when they choose to own a camera and lenses.
Sigma’s excellence in development and processing technologies has been built up since its founding in 1961, and has become further sophisticated with the introduction of the Sigma Global Vision in 2012. With this as a base, Sigma has given careful thought how photographers use and enjoy their lenses, including optical design, advanced functionality, build quality and the experience of picking up and using the lens, and with all of this carefully considered, the I series was born.
Beautiful details and bokeh for every scene
The high resolving power of the 24mm F3.5 DG DN | Contemporary covers the entire image from the center to the edges, which means photographers can rely on edge-to-edge sharpness at all apertures when shooting wide-angle scenes. With a minimum focus distance of around 10cm and a maximum reproduction ratio of 1:2, it enables photographers to explore a subject more freely, from capturing distant landscapes to photographing close-ups of smaller objects.
In addition to the attractive bokeh, it also gives photographers near-circular out-of-focus highlights, even at the edges of the frame. This helps create a close-up image of an in-focus subject with a blurred background, a technique that is very useful in a variety of settings.
The lens features the latest optical design optimized for mirrorless systems. This includes high-precision, glass-molded aspherical elements created with advanced processing technology, and SLD glass and high refractive index glass elements. Together they make it possible to combine high optical performance with compactness. In addition, the smooth focus drive system designed around a quiet and fast stepping motor also makes the 24mm F3.5 DG DN | Contemporary a desirable choice for shooting video.
Use of multiple high-precision aspherical glass molded lenses
The surface of molds for glass molding, which is a process that forms optical components by pressing glass materials at high temperatures, requires ultra-high precision. Sigma uses high-precision molds whose surfaces are controlled with an accuracy of ±5 nanometers (0.000005 mm) or smaller. High precision aspherical glass molded lenses archives both good aberration correction and compact lens size.
Mold for aspherical glass molded lenses
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, which 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 provides an exquisite feel to touch as well as sound effects, making photographers want to reach for it and play with it over and over again.
With a pairing with the 45mm F2.8 DG DN | Contemporary in mind, the 24mm F3.5 DG DN | Contemporary is compatible with the same filter size of 55mm, with a matching outermost diameter and similar overall lengths. With a combined weight of only 440g / 15.5oz.*, these two lenses can be used in tandem as part of a high-spec and compact camera system that covers a wide range of shooting situations.
Magnetic metal lens cap
The 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 45mm F3.5 DG DN | Contemporary
Sigma I series | Magnetic Metal lens Cap Promotion Video
*This image is 35mm.
*Cannot be used when a filter is attached.
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.
MTF Chart
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 (LH656-02)
Magnetic metal lens cap (LCF62-01M)
Compatible with Sigma USB DOCK UD-11 (sold separately / for L-Mount only)
Designed to minimize flare and ghosting
Every single lens undergoes Sigma’s proprietary MTF measuring system
9-blade rounded diaphragm
High-precision, durable brass bayonet mount
| Camera | SONY α7R V |
|---|---|
| Shutter Speed | 1/320s |
| Lens F number | F3.5 |
| ISO | 100 |
| Focal lenghth | 24mm |
| Photographer | Aya Iwasaki |
| Camera | SIGMA fp |
|---|---|
| Shutter Speed | 1/500s |
| Lens F number | F3.5 |
| ISO | 100 |
| Focal lenghth | 24mm |
| Photographer | Aya Iwasaki |
| Camera | SIGMA fp |
|---|---|
| Shutter Speed | 1/30s |
| Lens F number | F3.5 |
| ISO | 3200 |
| Focal lenghth | 24mm |
| Photographer | Mina Daimon |