An enjoyable prime lens your camera can hardly part with ―Admirably balanced performance and size for full-frame mirrorless cameras from our Contemporary line
Embody the Contemporary line’s concept
of “Pursuing optimum balance” Achieve the best balance of a lens suited for everyday use
Designed for combination with relatively small full-frame mirrorless cameras, this standard lens pursues easy operability as a regular prime lens by balancing its easy-to-carry size and high optical performance, thereby embodying the Contemporary line’s development concept of “pursuing optimum balance,” and becoming the perfect first lens in the lineup dedicated for full-frame mirrorless cameras.
Features
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 35mm 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 bokeh and rendering that
can be enjoyed in every scene
With the SIGMA 45mm F2.8 DG DN | Contemporary, bokeh expressions are especially featured. Spherical aberration has been controlled to ensure not only the large bokeh in the front and rear of the subject but also the rear bokeh near the area in focus create a gradient to a soft blur. This lens softens the periphery of blurred images suppressing the double-line bokeh etc. and enhances the three-dimensional impression of the subject with the smooth expressions in the foreground and the background. In addition, its minimum focusing distance of 24cm makes it possible to enjoy shooting snapshots and tabletop photos taking advantage of the angle of view. The design gives consideration to vignetting to achieve beautiful round bokeh and subdue swirly bokeh in the whole bokeh effects.
While this lens produces smooth bokeh effects of which one could say as “classical expression” when the aperture is wide open, it also realizes modern sharp rendering when it is stopped down. It is reassuring to hold this lens as the regular lens for everyday use.
High build quality and outstanding operability
Because this lens is intended for everyday use, particular attention has been given to build quality and operability. The lens barrel incorporating metal material as the main part achieves improved durability. Furthermore, thanks to the aperture ring with the right click feeling, comfortable operability during various shooting styles is ensured. The design gives consideration to MF operations, and a ring of appropriate torque provides good operability.
Metal bayonet hood
The lens hood features aluminium, using the same material as the lens body which has realized high quality and high rigidity.
Furthermore, cared for the click feeling at the time of when removing and attaching, the knurling process featured on the surface provides a superior usability.
High-speed and highly accurate
AF enabled by the stepping motor
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.
Other Features
Rounded diaphragm
The 7-blade rounded diaphragm creates an attractive blur in the out-of-focus areas of the image.
Designed to minimize flare and ghosting
From an early stage in the lens design process, flare and ghosting have been measured to establish an optical design resistant to strong incident light sources such as backlighting. SIGMA’s Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions.
Mount with Dust and Splash Resistant Structure
The mount features a special sealing to make the lens an excellent choice in a wide variety of conditions.
High-precision,
rugged brass bayonet mount
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Compatible with Lens Aberration Correction
Matching the optical characteristics of the lens, this function performs in-camera corrections of peripheral illumination, chromatic aberrations, distortion, and more, to further enhance image quality.
- *Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model.
*On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON'(AUTO).
ESSENTIALS
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.
Specifications
45mm F2.8 DG DN | Contemporary
Lens Construction
- ASPHERICAL LENS
Lens Construction
Angle of View
- 51.3°
Number of Diaphragm Blades
Minimum Aperture
Minimum Focusing Distance
Maximum Magnification Ratio
Filter size
Dimensions (Diameter × Length)
- L-Mount
φ64.0mm × 46.2mm / φ2.5in. × 1.8in. - Sony E-Mount
φ64.0mm × 48.2mm / φ2.5in. × 1.9in. - *The length of a lens is measured from the filter surface to its mount.
Weight
- L-Mount
215g / 7.6oz. - Sony E-Mount
230g / 8.1oz.
Edition Number
C019
Supplied Accessories
Lens Hood (LH577-01) supplied.
Performance / Data
MTF Chart
Diffraction MTF
Geometrical MTF
| Spatial frequency | S:Sagittal Line | M:Meridional Line |
|---|---|---|
| 10lp/mm | ||
| 30lp/mm |
Product Lineup
L-Mount
Lens Hood (LH577-01) supplied.
Sony E-mount
Lens Hood (LH577-01) supplied
Support
45mm F2.8 DG DN | Contemporary
FAQ
Contact
Accessories
Supplied Accessories
LENS HOOD LH577-01
FRONT CAP LCF-55mmⅢ
REAR CAP LCR Ⅱ
* The image is for SIGMA.
-
L-Mount
-
Sony E-mount
Separately Sold Accessories
PROTECTOR 55mm
Normal type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
WR PROTECTOR 55mm
Water-repellent, Antistatic type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
WR UV FILTER 55mm
UV Water-repellent, Antistatic type. UV filter prevents the bluish tone that generates when the weather is fine, by absorbing ultraviolet rays. It is effective in most situations, such as landscape, portrait and general photography on a sunny day. It is also an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
WR CIRCULAR PL FILTER 55mm
PL Water-repellent, Antistatic type. Circular PL filter removes the reflection of water surface and glass windows, and increases the contrast in landscape photography.
* Thinner frame wide type
USB DOCK UD-11
-
L-Mount
Catalogs / Resources
Manuals / Brochures
-
SIGMA Lens Catalogue 2022 Autumn (Brochures)
-
I series 2022 (Brochures)
-
SIGMA Lens Catalogue 2022 Spring (Brochures)
-
45mm F2.8 DG DN (Manuals)
Impressions / Samples
SIGMA I series Concept Movie 2022
I see what you see. | SIGMA I series special movie
I use trial and error to develop my style. | Alexandre Souêtre
45mm F2.8 DG DN | Contemporary Impression
SIGMA 45mm F2.8 DG DN | Contemporary Product Movie
Ani Watanabe’s Impression
SIGMA I series Magnetic Metal lens Cap
