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24mm F2 DG

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Camera Type
Mirrorless
Corresponding Mount
L-Mount,Sony E-mount
Sensor Format
Full-frame [DG]
Lens Construction
13 elements in 11 groups (2 SLD, 1 FLD, and 2 aspherical lens elements)
Angle of View
84.1°
Number of Diaphragm Blades
9(Rounded diaphragm)
Minimum Aperture
F22
Minimum Focusing Distance
24.5cm / 9.7in.
Maximum Magnification Ratio
1:6.7
Filter Size
φ62mm
Dimensions (Diameter × Length)
L-Mount：φ70mm × 72mm / φ2.8in. × 2.8in.
Sony E-mount：φ70mm × 74mm / φ2.8in. × 2.9in.
*The length of a lens is measured from the filter surface to its mount.
Weight
L-Mount：365g / 12.9oz.
Sony E-mount：360g / 12.7oz.
Edition Number
LENS HOOD（LH656-05B／LH656-05S）
MAGNETIC METAL LENS CAP（LCF62-02 MB／LCF62-02 MS） FRONT CAP（LCF-62 IV） REAR CAP（LCR III）
Pouch
Mount / Product Barcode
L-Mount （Black）：00-85126-94192-5 L-Mount （Silver）：00-85126-94193-2 Sony E-mount （Black）：00-85126-94181-9
Camera Compatibility
Link
I series “Premium Compact Primes” for mirrorless users
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 photographers looking for something more than something that simply captures images when they choose to own a camera and lens, 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.
New standards of optical performance for the Contemporary line
The Sigma 24mm F2 DG | Contemporary, like the Sigma 35mm F2 DG | Contemporary and the Sigma 65mm F2 DG | Contemporary , combines the highest level of optical performance even at its maximum aperture of F2 and a well-balanced body. The lens uses two SLD glass elements and one FLD glass element to correct axial chromatic aberration, which is a particular concern with bright lenses. It also incorporates two high-precision glass-molded aspherical elements, made possible by the processing technology of Sigma’s sole production facility in Aizu. This has enabled the total number of lens elements to be kept down and the size and weight of the lens to be reduced, while providing excellent correction of various aberrations. In anticipation of wide-angle lens applications, Sigma’s optical designers have ensured the lens resolution is extremely high, and is uniform from the center to the periphery of the image. Sagittal coma flare is also well suppressed, giving the lens a high degree of rendering power that makes it ideal for night sky photography. The AF drive system incorporates a quiet, high-speed stepping motor. This allows photographers to capture every detail of the spacious 24mm scene with light AF.
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.
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. The cover ring between the focus ring and the aperture ring has hairline processing that is also used for the rear cylinder of the Art line. This covering functions as a finger hold when attaching or detaching the lens.
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.
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.

* 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.

Lens construction
SLD glass
FLD glass
Aspherical lens
DIFFRACTION MTF
GEOMETRICAL MTF
MTF CHART GUIDE
: 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.
Inner focus system +
Stepping Motor +
Compatible with Lens Aberration Correction +
Super Multi-Layer Coating +
Aperture ring +
Focus Mode Switch +
Mount with Dust and Splash Resistant Structure +
Lens construction: 13 elements in 11 groups, with 1 FLD, 2 SLD and 2 aspherical lens elements
Compatible with high-speed autofocus
Support DMF and AF+MF
LENS HOOD（LH656-06B／LH656-06S）
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 IV
Shutter Speed
1/1000s
Lens F Number
F4
ISO
100
Focal Length
24mm
Photographer
Aya Iwasaki
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Camera
SONY α7R IV
Shutter Speed
2s
Lens F Number
F3.5
ISO
100
Focal Length
24mm
Photographer
Aya Iwasaki
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Camera
SIGMA fp
Shutter Speed
1/4000s
Lens F Number
F3.2
ISO
400
Focal Length
24mm
Photographer
Pauline Chardin
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Camera
SONY α9
Shutter Speed
1/320s
Lens F Number
F2
ISO
100
Focal Length
24mm
Photographer
Kazuyuki Hagiwara
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