Sigma 45mm f/2.8 DG Contemporary Lens Black for Sony E

Sigma 45mm f/2.8 DG Contemporary Lens Black for Sony E Summary

The Sigma 45mm f/2.8 DG Contemporary Lens Black for Sony E is a compact full-frame prime lens for Sony E-mount mirrorless cameras. It belongs to Sigma’s Contemporary I Series, a range of small, solidly built primes that combine optical performance with everyday portability.

With a focal length that sits between traditional 35mm and 50mm perspectives, the 45mm offers a natural field of view very similar to human vision, which is well suited to everyday subjects such as street photography, documentary, travel, events and general-purpose shooting. Its close focusing capability of just 12cm with high magnification of 1:3.6x supports tight compositions, while the f/2.8 aperture maintains consistent exposure control without increasing the lens’ size or weight.

This version carries the updated DG naming, reflecting Sigma’s move to mirrorless-only lens production. It suits photographers looking for a compact prime that handles well on Sony full-frame camera bodies and fits easily into a lightweight kit.

Sigma Contemporary 45mm F2.8 DG Key Features

• Full-frame 45mm prime lens for Sony E-mount mirrorless cameras
• Sigma’s smallest and lightest optic
• Metal construction throughout
• Natural perspective for everyday shooting
• Close focusing supports tight compositions
• Quiet autofocus for stills and video
• Rounded aperture diaphragm for smooth background rendering
• Compatible with 55mm front filters
• Knurled controls with weather sealed mount

Sigma 45mm f/2.8 DG Contemporary Lens Black for Sony E in More Detail

Optical and image quality

The 45mm focal length produces a natural perspective without appearing wide or compressed, making it well suited to scenes with subject context, such as street photography, weddings or environmental portraits. Image rendering is consistent across the frame, with controlled distortion and good edge performance for everyday shooting, alongside sharp detail and vivid colour reproduction.

The optical design includes eight elements in seven groups, incorporating two aspherical elements. This helps control image artefacts and maintain sharpness, even when shooting at wider apertures.

Close focusing allows subjects to be framed tightly without switching lenses, which is useful for photographing details, small objects and textures.

Autofocus operation

Autofocus is quiet and reliable, making the lens suitable for both stills and video. Focus acquisition is accurate, and the lens supports Sony’s autofocus modes, including continuous AF and subject tracking on compatible camera bodies.

Video

The lens maintains consistent framing during focus transitions, reducing distracting shifts while recording video. Its compact size and low weight place minimal strain on gimbals and handheld rigs, particularly when paired with smaller Sony mirrorless cameras.

The moderate f/2.8 aperture supports predictable exposure control without adding bulk, helping the lens integrate smoothly into mixed photo and video workflows.

Handling and controls

The lens has a short barrel length and low overall weight, which supports long shooting sessions without fatigue. An all-metal exterior provides a solid feel, while the clean control layout keeps operation straightforward in varied shooting environments.

An aperture ring allows aperture adjustment directly on the lens, or via the camera when set to Auto. The knurled metal finish on the lens hood, focus ring and aperture ring improves grip and tactile feedback. A rubber seal around the mount helps protect against dust and moisture.

The 45mm focal length also works well as a single-lens option for photographers who prefer to travel light, offering an alternative to classic 35mm or 50mm primes without frequent lens changes.

Frequently asked questions

Is this lens different from the earlier DG DN version?

No. Optical design, autofocus and handling are unchanged. The update reflects Sigma’s mirrorless-only naming structure.

Does it work on APS-C Sony E-mount cameras?

Yes. On APS-C bodies it provides an equivalent field of view of approximately 67.5mm.

Is the lens suitable for video recording?

Yes. Autofocus is quiet, and the compact size suits handheld and stabilised setups.

Does it support close-up photography?

Yes. The lens focuses closely enough for detail-oriented compositions and small subjects.

Can filters be mounted?

Yes. It accepts a standard 55mm front filter thread.

What’s in the box

• Sigma 45mm f/2.8 DG Contemporary Lens Black for Sony E Mount
• Lens Hood LH577-02B
• Magnetic metal lens cap LCF55-02 MB
• Front Cap LCF-55 IV
• Rear Cap LCR III
• Pouch

Specifications