Additional information on the new HD PENTAX-D FA 28-105mm f/3.5-5.6 ED DC WR lens (price: $499.95):
One sample photo is available here.
1. Standard zoom lens covering most frequently used ranges
This standard zoom lens accommodates the image circle of a 35mm full-frame image sensor, and covers focal lengths between 28mm wide angle and 105mm medium telephoto. By incorporating the latest optics and a number of high-performance optical elements, it retains a sufficient brightness level even at edges of the image field, while effectively compensating for various aberrations. It delivers high-resolution images by optimizing the imaging power of the PENTAX K-1’s approximately 36.4 effective megapixels. Its compact, lightweight body and excellent cost performance make this lens a perfect regular lens for the Pentax K-1 camera.
2. Excellent image description, complementing the full-frame digital SLR camera performance
In its 15-element, 11-group optics, this zoom lens incorporates two high-precision aspherical optical elements, one ED (Extra-low Dispersion) glass optical element and one anomalous-dispersion glass optical element, to deliver bright, sharp images with minimal chromatic and spherical aberrations. Since its optics is designed to assure ample resolving power for the large, high-pixel image sensor, it produces well-defined, fine-detailed images.
3. HD Coating to improve image description
This lens is treated with the high-grade, multi-layer HD Coating.* Compared with conventional multi-layer coatings, this PENTAX-original coating assures higher light transmittance and less reflection to deliver bright, high-contrast images that are free of flare and ghost images, even under demanding lighting conditions such as backlight.
* HD stands for High Definition.
4. Quick-Shift Focus System
This PENTAX-developed system allows for flawless, delay-free switching from autofocus to manual-focus operation, after the subject is captured in focus by the camera’s AF system.
5. Weather-resistant construction
This lens features a dependable weather-resistant construction with eight sealing parts to effectively prevent the intrusion of water into the lens interior. Paired with a weather-resistant PENTAX digital SLR camera body, it creates a durable, dependable digital imaging system that performs superbly in demanding shooting settings — even in rain or mist, or in locations prone to water splashing or spray.
6. Other features
| Focal Length | 28-105mm |
|---|---|
| Equivalent to 43-161mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras) |
|
| Maximum Aperture | F3.5-5.6 |
| Minimum Aperture | F22-38 |
| Lens Construction | 15 elements in 11 groups |
| Angle of View (Diagonal) | 75-23.5°(when attached to PENTAX 35mm full-frame SLR cameras) 53-15.5°(when attached to PENTAX APS-C size DSLR cameras) |
| Mount | KAF3 |
| Minimum Focusing Distance | 0.5m (1.64 ft.) |
| Maximum Magnification | 0.22x |
| Filter Diameter | 62mm |
| Diaphragm Control | Fully automatic |
| Number of Diaphragm Blades | 9 |
| Rounded diaphragm （28mm: F3.5-6.3 105mm: F5.6-10） | |
| Lens Hood | PH-RBC62 (included) |
| Lens Cap | O-LC62 (included) |
| Lens Case | S80-120 (optional) |
| Maximum Diameter x Length | approx. 73.0mm x 86.5mm (approx. 2.9in. x 3.4in.) |
| Weight | approx. 440g / with hood approx. 463g (approx. 15.5oz./ with hood approx. 16.3oz.) |
HD PENTAX-D FA 28-105mm f/3.5-5.6ED DC WR lens sealing: