The Sigma 45mm f/2.8 DG DN Contemporary is a normal-length prime lens for full-frame Sony E-mount mirrorless cameras. It is part of Sigma's Contemporary line and is built to balance size and weight with optical performance. On APS-C models it gives a 68mm equivalent focal length.
The optical design controls spherical aberrations. This produces soft, rounded bokeh and adds a three-dimensional look to the subject. A rounded seven-blade diaphragm adds to the smooth bokeh. The constant f/2.8 maximum aperture gives control over depth of field. The 9.5" minimum focusing distance suits snapshots and tabletop photos.
A stepping motor drives fast, precise and near-silent autofocus. It works with features such as Face/Eye Detection AF and during video shooting. Full-time manual focus is also available. The brass bayonet mount has rubber sealing that makes it dust- and splash-resistant. The included lens hood protects the front element and helps prevent flare.
- Mount
- Sony E
- Format
- Full-frame
- Focal length
- 45mm (68mm equivalent on APS-C)
- Aperture range
- f/2.8 to f/22
- Diaphragm
- Rounded 7-blade
- Min. focus distance
- 9.5"
- Autofocus
- Stepping motor, with full-time manual focus
- Construction
- Brass bayonet mount with rubber sealing; dust- and splash-resistant
- In the box
- Sigma 45mm f/2.8 DG DN Contemporary lens, LH577-01 lens hood, Sigma LCF-55 III 55mm lens cap, Sigma LCR II rear cap for Sony E mount