Pentax today announced two new lenses to their full frame arsenal, the PENTAX-D FA 15-30mm F2.8ED SDM WR and the PENTAX-D FA 28-105mm F3.5-5.6ED DC WR, bringing the total number of lenses for the format up to 12. The  15-30mm f/2.8 is an ultra-wide and fast zoom lens, while the 28-105 f/3.5-5.6 is a lightweight, more standard zoom lens. 

PENTAX-D FA 15-30mm F2.8ED SDM WR: Available in April 2016 for aEstimated Price of $1449.95

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The 15-30mm incorporates three ED (Extra-low Dispersion) glass optical elements and three aspherical optical elements in its 18-element, 13-group optics, to deliver high-resolution images rich in contrast even at the edges of the image field, while “effectively minimizing chromatic aberration, distortion and coma.”

The incorporation of a new-generation SDM (Supersonic Direct-drive Motor) assures that this zoom lens provides quiet, high-speed autofocus operation, letting the photographer react swiftly to all types of subjects.

Special seals applied throughout the lens body provide this zoom lens with dependable weather-resistant construction, effectively preventing the intrusion of water into the lens interior. By pairing it with a weather-resistant PENTAX digital SLR camera body, the photographer has a durable, dependable digital imaging system that performs superbly under demanding shooting conditions — even in the rain or mist, or at locations prone to water splashes or spray.

The lens is treated with high-grade, multi-layer “High Definition” Coating. Compared with conventional multi-layer coatings, this PENTAX-original coating assures higher light transmittance and less reflection to deliver bright, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as backlight.

Other features of note:

  • Quick-Shift Focus System for instant switching from autofocus to manual-focus operation, by holding the shutter-release button halfway down and turning the focus ring after the subject is captured in focus by the camera’s AF system.
  • Rounded diaphragm with nine blades to produce a smooth, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources.
  • SP (Super Protect) Coating applied to the front surface of the lens to effectively repel water and grease.

PENTAX-D FA 28-105mm F3.5-5.6ED DC WR: Available in April 2016 for aEstimated Price of $499.95

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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.

This lens is treated with the same high-grade, multi-layer HD Coating found on the 15-30mm. It is also as weather-resistant as the 15-30mm/

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.

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