Ultra-small. Ultra-light. Ultra-sharp.
The SIGMA I series introduces compact, beautifully designed, high-performance optics for mirrorless camera systems. In its first collection, SIGMA introduces a 24mm wide-angle prime to the Contemporary lens line-up that offers excellent portability and versatility.
The all-new I series 24mm F3.5 DG DN | C, which is available for L-Mount and Sony E-mount cameras, offers a very compact design similar to that of the 45mm F2.8 DG DN | C. Perfectly balanced on a mirrorless body, it is ideal for landscapes, astrophotography, wide-angle portraits, interiors, close-ups, events and street photography.
Stunning detail and beautiful bokeh
Despite its small size, no compromise has been made on the optical performance of the SIGMA I series 24mm F3.5 DG DN | Contemporary. It is capable of capturing the finest details when shooting on high resolution full-frame cameras, and it does so across the entire frame, which means photographers can rely on edge-to-edge sharpness at all apertures when shooting wide-angle scenes.
The lens features the latest optical design optimised for mirrorless systems. This includes three 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 performance with portability. In addition, the smooth focus drive system designed around a quiet and fast stepping motor also makes the I series 24mm F3.5 DG DN | C a desirable choice for shooting video.
The lens renders very attractive bokeh, and out-of-focus highlights are near-circular, even at the edges of the frame. This is a particularly useful characteristic when shooting close-ups at the lens’ exceptionally close focusing distance of 10.8cm, where the subject is sharp and the background is blurred due to a shallow depth-of-field. The maximum reproduction ratio is 1:2.
Compact and sharp: a perfect landscape lens
With a 24mm focal length this wide-angle prime is perfect for landscapes, astrophotography, events and urban photography. High resolving power across the whole frame and well-controlled flare and ghosting make for ultra-high quality results. Its small size and weight make it easy to carry long distances. Image: Ando Go
Short focusing distance for close-up shooting
Wide-angle primes aren’t usually used for capturing macro-style shots, but the 24mm F3.5 DG DN | C has a very short minimum focusing distance of 10.8cm and a maximum reproduction ratio of 1:2. This makes it ideal for shooting close-ups of smaller objects. Image: Masayuki Kato
Introducing a new photographic experience 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 range in 2012. With this as a base, SIGMA has given careful thought to how photographers use and enjoy their lenses, including optical design, advanced functionality, superb build quality and the experience of picking up and using the lens, and with all of this carefully considered, the I series was born.
Superb build quality and with a compact form factor
Sigma is now one of the very few imaging manufacturers whose products are solely made in Japan. This gives us full control over our production processes and helps us maintain the highest levels of quality control over the design, manufacture and construction of every product. Great care is taken to ensure the highest quality materials are chosen.
All I series lenses are designed with an all-metal barrel. The precision-cut aluminium parts not only give the lens 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 the production of the cine lens line-up for professional film-makers.
The lens has an aperture ring so that users can change aperture using either the lens or the camera. Great attention was paid to ensure the click is well-define but not too sharp. Sound-deadening grease has been used to create a more rounded sound. Similarly the metal focus ring is perfectly weighted for a precise and smooth action to ensure accurate manual focus control. The ‘knurling’ grooves cut into both rings improve slip resistance.
Many photographers will choose to pair the 24mm F3.5 DG DN |C with the 45mm F2.8 DG DN | C (see right). Not only do they share the same filter size of 55mm but they have a matching outermost diameter and similar overall lengths. With a combined weight of only 440g (figure for L-Mount) these two lenses provide plenty of shooting options and are easily light enough to carry around all day.
Magnetic metal lens cap and metal lens hood
The 24mm F3.5 DG DN | C comes with a carefully machined metal lens hood, a feature not even found on Sigma’s Art series lenses. A large number of grooves called ‘knurling’ are cut in, improving the lens operation by serving as slip resistance and giving the lens a premium look and feel unique to the I Series. A specially chosen plastic was used for the part that connects to the lens to ensure smooth operation.
Included in the box is the regular Sigma plastic lens cap as well as an all-metal magnetic cap (pictured left), which snaps firmly on to the end of the lens. With no requirement for a spring-loaded clasp, the cap has a sleek, minimal finish.
Optional magnetic lens cap holder with carabiner
Available to buy separately is a new lens cap holder, onto which the magnetic metal lens cap can be quickly and easily attached when the lens is in use. This keeps the cap within easy reach and makes it less likely to get lost. Plus, its elegant design is a stylish addition to a photographer’s equipment.
The holder comes with a carabiner so that it can be attached to clothing or a bag strap.
- Lens construction: 10 elements in 8 groups, with 1 SLD element and 3 aspherical elements
- Compatible with high-speed autofocus
- Stepping motor
- Aperture ring
- Compatible with lens-based optical correction (supported cameras only. Corrections may vary)
- Mount with dust- and splash-proof structure
- Super Multi-Layer Coating
- Focus Mode Switch
- Petal Type Lens Hood
- Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
- Designed to minimise flare and ghosting
- Supports DMF, AF+MF (for Sony E-mount only)
- Inner focusing
- Every single lens undergoes SIGMA’s proprietary MTF measuring system ‘A1’
- 7-blade rounded diaphragm
- High-precision, durable brass bayonet mount
- ‘Made in Japan’ craftsmanship
You'll find our philosophy and craftsmanship in every product
Our new lineup fully expresses our approach to lenses and photography itself. All of our lenses belong to one of three lines—Contemporary, Art, or Sports—all of which share our development philosophy and advanced manufacturing system. High performance, high quality, and high end in every respect, these lenses give people who love photography lasting value and consistent, exciting results. The secret is our passion for craftsmanship that we put into every production process and every product.
Evaluation with Sigma's own MTF measuring system “A1”
We used to measure lens performance with MTF measuring system using conventional sensors. However, we’ve now developed our own proprietary MTF (modulation transfer function) measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of our quality control inspections. The SIGMA 50mm F1.4 DG HSM will all be checked using this “A1” before they are shipped.
* A1: Aizu1
“Made in Japan”
All Sigma’s manufacturing – right down to moulds and parts – with a few exceptions, are carried out under a single integrated production system, entirely in Japan. We are now one of the very few manufacturers whose products are solely “made in Japan”. We like to think our products are somehow imbued with the essence of our homeland, blessed as it is with clean air and water, and focused, hard-working people. We pride ourselves on the authentic quality of Sigma products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Our sophisticated products have satisfied professionals and lovers of photography all over the world because our manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of our experts.
Applicable for the Mount Conversion Service
As an experienced lens manufacturer that has been creating a diverse range of interchangeable lenses, we have started the innovative chargeable service “Mount Conversion Service”. With this service, the mount of your current SIGMA lenses can be changed to another mount of your choice. It gives a new life to your favourite lenses when you wish to use it on a different camera body.
* This “Mount Conversion Service” is different from a normal repair. In order to apply for the service, please contact your nearest authorized subsidiary/distributor of SIGMA.
Ultra-small. Ultra-light. Ultra-sharp.
24mm F3.5 DG DN
|Lens Construction||10 elements in 8 groups|
|Angle of View (35mm)||84.1 degrees|
|Number of Diaphragm Blades||7 Blades (Rounded diaphragm)|
|Minimum Focusing Distance||10.8cm|
|Filter Size||Diameter 55mm|
|Dimensions||Diameter 64mm x 48.8mm|
Corresponding AF Mounts
Ultra-small. Ultra-light. Ultra-sharp.
Diffraction and Geometrical MTF Chart - 24mm F3.5 DG DN
Ultra-small. Ultra-light. Ultra-sharp.
Front Lens Cap
Protect the front element of your lens with a SIGMA Rear Lens Cap. Helps to prevent dust, scratches and unwanted damage. Supplied with new SIGMA Global Vision lenses* *Excluding some lens variants.
£5.99 – £14.99
Magnetic metal lens cap FRONT CAP LCF55-01M (55MM I series)
The SIGMA I series features full-frame compatible lenses that offer new value to mirrorless systems. It is the dedicated magnetic metal lens cap crafted without any compromise that completes the concept of the I series, which embodies the quality of the products, the feeling of using it and the pleasure of owning it. In order …
Continue reading “Magnetic metal lens cap FRONT CAP LCF55-01M (55MM I series)”
Magnetic metal lens cap holder SIGMA LENS CAP HOLDER CH-11
The magnetic metal cap holder LENS CAP HOLDER CH-11 (sold separately) allows you attach the cap to the strap of your belt or a bag for carrying around hands free. Push your finger through the donut-shaped hole when you remove the cap from the cap holder. Lens cap supplied separately.
Petal Type Lens Hood LH576-01
The knurled surface of the metal hood helps prevent your fingers slipping when attaching and removing the hood. All of the grooves are machined one by one to provide a comfortable, premium grip is important for a good user experience.
Rear Lens Cap
Protect the rear elements of your lens with a SIGMA Rear Lens Cap. Helps to prevent dust, scratches and unwanted damage to the lens contacts. Supplied with new SIGMA Global Vision lenses* *Excluding some lens variants.
Sigma USB Dock UD-11
Designed exclusively for the use with a SIGMA Contemporary, Art, or Sports lens and its accessories, the SIGMA USB DOCK allows users to update firmware and customize settings on lenses in these lineups. As the latest addition to the lineup, the USB DOCK UD-11 is designed for two types of mirrorless camera mounts: the L-Mount …