CONTEMPORARY23mm F1.4 DC DN
- Designed for crop sensor mirrorless
- Classic wide-angle focal length (35mm equivalent)
- Ultra-fast F1.4 maximum aperture
- Outstanding low-light performance
- Superb sharpness at all apertures
- Minimizes optical aberrations
- Quiet and fast stepping motor
- Dust and splash resistant mount
- Minimized flare and ghosting
- Compatible with Lens Aberration Correction
Sony E-mount: 65.8mmx 78.9mm / 2.6 in. x 3.1 in.
FUJIFILM X Mount: 65.8mm x 79.2mm / 2.6 in. x 3.1 in.
Canon RF Mount: 69.0mm x 76.9mm / 2.7 in. x 3.0 in.
Canon EF-M mount: 69.0mm x 76.9mm / 2.7 in. x 3.0 in.
Sony E-mount: 330g / 11.6 oz.
FUJIFILM X Mount: 335g / 11.8 oz.
Canon RF Mount: 345g / 12.2 oz.
Canon EF-M mount: 345g / 12.2 oz.
Large aperture F1.4 brightness and excellent resolution from maximum aperture
The Sigma 23mm F1.4 DC DN | Contemporary has an easy-to-use angle of view equivalent to 35mm in 35mm format, as well as the brightness of a large F1.4 aperture and high descriptive power. The optics is composed of 13 elements in 10 groups, including 3 SLD glass elements and 2 aspherical lens elements, to achieve sharp, clear images. The lens delivers excellent resolving power from the maximum aperture. Furthermore, the large F1.4 aperture allows for large, beautiful bokeh effects. The compact, palm-size body allows you to enjoy the rich descriptive power of mirrorless cameras. Careful countermeasures against flare and ghosting enable clear shooting even in backlit environments.
Compact body optimized for APS-C mirrorless cameras
To take advantage of the mobility of APS-C mirrorless cameras, the lens body is compact and lightweight, with a weight of 340g*, length of 76.9mm*, and filter diameter of 52mm. At the same time, the quality of the lens body itself has not been compromised. The high-precision machining technology of Sigma’s sole production facility in Aizu, Japan, has enabled the lens body to achieve the ideal balance between excellent optical performance based on the latest optical and mechanical design and compactness. The AF drive system uses a quiet, high-speed stepping motor. The latest algorithm enables quick focusing for easy shooting.
*The figures are for L-Mount.
Support for switching between linear and non-linear focus ring settings (for L-Mount only)
For L-Mount cameras, it is possible to switch to “linear focus,” in which the focus shifts by a fixed amount according to the rotation angle of the focus ring.
*Only for compatible L-Mount camera bodies.
Expands the variety of APS-C format F1.4 prime lenses
The Sigma Contemporary line offers a wide variety of APS-C format F1.4 prime lenses. All of them share the concept of combining superior resolution with compactness and light weight. By combining them according to your needs, you can build a compact photographic system without compromising on image quality.
LENS CONSTRUCTION
- SLD Glass
- Aspherical Lens
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.
Spatial Frequency
S: Sagittal Line
M: Meridional Line
10lp/mm
30lp/mm
DIFFRACTION MTF
GEOMETRICAL MTF
Inner focus system
To increase stability, this lens configuration uses movable internal lens elements that adjust focus without changing the length of the lens barrel.
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).
Super Multi-Layer Coating
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 effective, assuring images of outstanding contrast.
Linear focus / Non-linear focus (for L-Mount only)
A focus movement method of interchangeable lenses for mirrorless cameras 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.
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.
Mount with Dust and Splash Resistant Structure
The lens mount incorporates rubber sealing to protect the mount from dust and water drops.
Other
- Rounded diaphragm
- Compatible with high-speed autofocus
- Compatible with AF Assist (Sony E-mount only)
- Compatible with SIGMA USB DOCK UD-11 (sold separately / L-Mount only)
- High-precision, durable brass bayonet mount
- Support DMF and AF+MF
- Designed to minimize flare and ghosting
- Every single lens undergoes Sigma's proprietary MTF measuring system
- Mount Conversion Service available
- "Made in Aizu, Japan" craftsmanship
