The Sigma 15mm F1.4 DC Contemporary is an ultra-wide-angle prime lens for APS-C mirrorless cameras, in Sony E-mount. It has a bright F1.4 maximum aperture and a 15mm focal length. On Sony E-mount APS-C cameras it gives an 86.9° angle of view and a 22.5mm full-frame equivalent perspective.
The lens weighs 220g and is 64.8mm long. Its optics are 13 elements in 11 groups, including 1 FLD, 3 SLD and 3 aspherical elements. The design is intended to deliver sharpness across the frame while helping control chromatic aberration and sagittal coma flare. A 9-blade rounded diaphragm shapes the aperture.
A stepping motor drives the autofocus, and focus breathing is suppressed for video. The structure is dust- and splash-resistant, and the front element has a water- and oil-repellent coating. An aperture ring allows direct aperture control.
- Mount
- Sony E-mount
- Sensor format
- APS-C
- Focal length
- 15mm (22.5mm full-frame equivalent)
- Aperture
- F1.4 maximum, F16 minimum
- Angle of view
- 86.9°
- Construction
- 13 elements in 11 groups
- Special elements
- 1 FLD, 3 SLD, 3 aspherical
- Diaphragm
- 9 blades, rounded
- Autofocus
- Stepping motor
- Min. focus distance
- 17.7cm
- Max. magnification
- 1:7.9
- Filter thread
- 58mm
- Length
- 64.8mm
- Weight
- 220g
- Weather resistance
- Dust- and splash-resistant structure
- Front coating
- Water- and oil-repellent
- Controls
- Aperture ring