| Name |
Pentax 21mm f/3.2 AL Limited HD DA |
| Image Circle |
APS-C |
| Type |
Wide Prime |
| Focal Length |
21mm |
| APS Equivalent |
32mm |
| Max Aperture |
f/3.2 |
| Min Aperture |
f/22 |
| Diaphragm Blades |
7 (rounded) |
| 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 |
134g / 4.2 oz. (without hood) |
| Notes |
Available in black or silver; Dual filter attachment design: 43mm filters on the hood, and 49mm filters on the lens (without use of the hood); High-grade multi-layer HD (High Definition) coating; Rounder aperture blades should yield more pleasing bokeh. |
| Typical Online Price |
US$700 |
