The Sigma 18-50mm F2.8 DC DN Contemporary is a compact, lightweight standard zoom lens for Sony E-mount crop-sensor mirrorless cameras. It covers 18-50mm, which equals 27-75mm on a full-frame camera. The aperture stays at f/2.8 across the whole zoom range, so exposure stays consistent as you zoom.
The optical design uses three glass-molded aspherical elements and one low-dispersion element to reduce aberrations while keeping weight down. A stepping motor drives the autofocus, which is fast and quiet. This suits video and moving subjects.
The minimum focusing distance is 4.8 inches (12.3 cm), which allows close-up shooting. A rounded seven-blade diaphragm produces smooth background blur. The focal range suits landscapes, portraits, street photography, architecture and events.
- Brand
- Sigma
- Model
- 18-50mm F2.8 DC DN Contemporary (model number 585965)
- Mount
- Sony E-mount
- Sensor format
- APS-C / crop-sensor mirrorless cameras
- Focal length
- 18-50mm (27-75mm full-frame equivalent)
- Aperture
- Constant f/2.8 across the zoom range
- Optics
- 3 glass-molded aspherical elements, 1 low-dispersion element
- Autofocus
- Stepping motor, fast and quiet
- Min. focus distance
- 4.8 in (12.3 cm)
- Diaphragm
- Rounded 7-blade
- Color
- Black
- Release date
- 2021-10-28