HD PENTAX-D FA 28-105mm F3.5-5.6ED DC WR - A compact, lightweight standard zoom lens
Despite its compact, highly maneuverable body, this versatile zoom lens is designed to accommodate the image circle of a large 35mm full-frame image sensor, thanks to the adoption of state-of-the-art optics and high-performance optical elements. When mounted on the PENTAX K-1 camera body, it delivers high-resolution imaging power, making it an ideal everyday-use lens for this new 35mm full-frame digital SLR camera.

Main Features

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.
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.
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.
6. Other features
   • SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease.
   • Rounded diaphragm to produce a smooth, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources.
   • Built-in DC motor to assure smooth, quiet, high-speed autofocus operation