Wide angle lens with large aperture
and superior peripheral brightness
20mm F1.8 EX DG ASPHERICAL RF
20mm F1.8 EX DG ASPHERICAL RF
Lens Construction
13elements in
11groups
Number of
Diaphragm Blades
9Blades
Minimum Aperture
F22
Minimum Focusing
Distance
20cm/7.9in.
Maximum
Magnification Ratio
1:4
Filter Size
φ82mm
Dimensions
φ88.6mm
89.5mm
3.5in.×3.5in.
Weight
520g / 18.3oz.
Camera Type
- DSLR
Corresponding Mount
- SIGMA SA-mount
- Canon EF mount
- Nikon F mount
- Sony A-mount
- Pentax mount
Sensor Format
- Full-frame [DG]
*Values are for SIGMA SA-mount