With the introduction of this lens, the high-quality, high-performance Star series now provides a wide angle-of-view coverage —from ultra-wide angle to telephoto — with its compact models featuring a large F2.8 maximum aperture, which are exclusively designed for use with PENTAX APS-C-format digital SLR cameras.
In addition to an outstanding dustproof, weather-resistant construction, and -10°C cold-resistant construction, the lens provides a Focus Clamp Mechanism to lock focus at the desired focal point. It also provides useful features to improve performance and dependability in harsh outdoor conditions: a space specifically designed for wrapping a heating device to prevent dew condensation, and a metallic frame structure to more effectively transmit the heat of the heating device to the lens. These devices greatly improve the lens’s operability when shooting landscapes and starry skies.
| Technical Specifications |
|---|
| Series |
HD PENTAX DA
|
| Focal Length |
11-18mm
|
| Equivalent to 35mm format |
Equivalent to 17-27.5mm in 35mm format(when attached to PENTAX APS-C size DSLR cameras)
|
| Maximum aperture |
F2.8
|
| Minimum aperture |
F22
|
| Number of Diaphragm Blades |
9
Rounded diaphragm （11mm:F2.8-4.5 18mm:F2.8-5.0）
|
| Angle of View |
104-76°
(when attached to PENTAX APS-C size DSLR cameras)
|
| Construction |
16 elements in 11 groups
|
| Focusing Range |
0.3m (0.98ft.)
|
| Smallest object distance |
0.14m
|
| Magnification |
0.10x
|
| Filter size |
82mm
|
| Mount |
K-AF3
|
| Weight |
approx. 704g / with hood approx. 739g (approx. 24.8 oz./ with hood approx. 26.1oz.)
|
| Dimensions (Length x Diameter) |
approx. 90mm x 100mm (approx. 3.5in. x 3.9in.)
|
| Kit Content |
Lens Hood: PH-RBF82 (included)
Lens Cap: O-LC82 (included)
Lens Case: S120-150 (included)
Lens Mount Cap K
|
| Special Features |
HD Coating
SP (Super Protect) Coating
AW (All Weather Resistant)
Quick-shift Focus System (QFS/M)
DC (DC Motor)
Focus Clamp Function
|
