contemporary
45mm F2.8 DG
Available mounts
- I series - All metal design
- Rugged build quality
- Beautiful bokeh and rendering
- Rounded diaphragm
- Mount with dust and splash proof structure
- Fast AF with full-time manual focus
- Designed to minimize flare and ghosting
- Compatible with Lens aberration correction
- Made in Japan
SPECIFICATIONS
FEATURES
LENS CONSTRUCTION / MTF
TECHNOLOGY
Sony E-mount：φ64.0mm × 48.2mm / φ2.5in. × 1.9in.
Sony E-mount：235g / 8.3oz.
The three-digit code on the surface of the lens is to indicate the year the lens was first released. (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)
L-Mount（Silver)：00-85126-94199-4
Sony E-mount（Black)：00-85126-94184-0
*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.
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Lens construction
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
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10lp/mm
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30lp/mm
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Diffraction MTF
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Geometrical MTF
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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 | 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.
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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.
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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.
An enjoyable prime lens your camera can hardly part with ―Admirably balanced performance and sizefor 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.
