| Name |
Pentax SMC P-DA 21mm f/3.2 AL Limited |
| Image Circle |
APS-C |
| Type |
Wide Prime |
| Focal Length |
21mm |
| APS Equivalent |
31.5mm |
| Max Aperture |
f/3.2 |
| Min Aperture |
f/22 |
| Diaphragm Blades |
7 |
| Lens Construction |
8 elements in 5 groups, including 1 hybrid aspherical element |
| Diagonal Angle of View(Based on image circle) |
68 degrees |
| Focus Details |
"Quick Shift" AF/MF mechanism |
| Front Element Rotation |
No |
| Zoom System |
n/a |
| Closest Focus |
20cm / 7.9 in. |
| Magnification Ratio |
0.17x / 1:5.9 |
| Filter Size |
43mm or 49mm |
| Dimensions(Length x Diameter) |
25mm x 63mm / 1.0 in. x 2.5 in. |
| Weight |
140g / 4.9 oz. |
| Notes |
Dual filter attachment design: 43mm filters on the hood, and 49mm filters on the lens (without use of the hood). |
| Typical Online Price |
US$549.95 |
