| Name |
Sigma 28mm ƒ/1.8 EX DG Aspherical Macro |
| Image Circle |
35mm |
| Type |
Wide Prime |
| Focal Length |
28mm |
| APS Equivalent |
1.5x: 42mm; 1.6x: 44.8mm |
| Max Aperture |
ƒ/1.8 |
| Min Aperture |
ƒ/22 |
| Diaphragm Blades |
9 |
| Lens Construction |
10 elements in 9 groups, including 2 aspherical elements |
| Diagonal Angle of View(Based on image circle) |
75.4 degrees |
| Focus Details |
Internal with Dual Focus mechanism |
| Front Element Rotation |
No |
| Zoom System |
n/a |
| Closest Focus |
20cm / 7.9 in. |
| Magnification Ratio |
0.34x / 1:2.9 |
| Filter Size |
77mm |
| Dimensions(Length x Diameter) |
82.5mm x 83.6mm / 3.2 in. x 3.3 in. |
| Weight |
500g / 17.6 oz |
| Notes |
Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax |
| Typical Online Price |
US$269.99 |
