| Name |
Pentax 20-40mm ƒ/2.8-4 ED Limited DC WR HD DA |
| Image Circle |
APS-C |
| Type |
Standard Zoom |
| Focal Length |
20 - 40mm |
| APS Equivalent |
30.5 - 61.5mm |
| Max Aperture |
ƒ/2.8 - 4 |
| Min Aperture |
ƒ/22 - 32 |
| Diaphragm Blades |
9 (rounded) |
| Lens Construction |
9 elements in 8 groups, including 1 ED and 1 SLD element |
| Diagonal Angle of View(Based on image circle) |
70 to 39 degrees |
| Focus Details |
Quick-shift Focus; DC focus motor |
| Front Element Rotation |
No |
| Zoom System |
Rotary |
| Closest Focus |
28cm / 0.9 ft. |
| Magnification Ratio |
0.20x / 1:5 |
| Filter Size |
55mm |
| Dimensions(Length x Diameter) |
68.5mm x 71.0mm / 2.7 in. x 2.8 in. |
| Weight |
283g / 10 oz |
| Notes |
HD coating, SP (Super Protect) coating; Weather-resistant construction; Accessories include: metal hood, objective cap, soft lens case. Available in black or silver. |
| Typical Online Price |
US$1,000 |
