The Sigma 23mm F1.4 DC DN Contemporary for Sony E is a fast wide-standard prime for APS-C cameras. It gives about a 35mm equivalent view, which many photographers treat as the one lens that does almost everything, and the F1.4 aperture lets you keep shooting when the light drops. At 330g it balances well on an a6700, a6400 or ZV-E10 II.
Image quality
The optical design has 13 elements in 10 groups, including three SLD and two aspherical elements. They keep colour fringing and distortion under control, and Super Multi-Layer Coating helps hold contrast when you shoot into the light.
Bokeh and low light
At F1.4 you can blur a busy background behind a person or a plate of food, and the nine-blade rounded aperture keeps out-of-focus highlights soft and round. The same aperture gives you around two stops more light than an F2.8 zoom.
Autofocus and video
A stepping motor drives the focus group quickly and quietly, and it works with the camera's face and eye detection. Focus is internal, so the lens does not change length as it focuses, which helps on a gimbal.
Size, handling and close focus
It weighs 330g and measures 65.8 x 78.9mm, with a 52mm filter thread. It focuses down to 25cm, for a maximum magnification of 1:7.3, and the mount is sealed against dust and splashes.
Who it's for
This is for photographers who want one small, bright lens for everyday pictures, from street and travel to food, interiors and environmental portraits. The a6700 has in-body stabilisation; the a6400 and ZV-E10 II do not. If you prefer a slightly tighter, more classic standard view, the Sigma 30mm F1.4 DC DN is lighter still. If you would rather have a zoom, the Sigma 18-50mm F2.8 DC DN covers this focal length at F2.8.
Also available for Canon RF and L-Mount.
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