Ricoh has expanded its full-frame lens range, announcing the HD Pentax-D FA 15-30mm F2.8 and FA 28-105mm F3.5-5.6 alongside the introduction of the full-frame K-1 DSLR.
The HD PENTAX-D FA 15-30mm F2.8ED SDM WR is a large-aperture, ultra-wide-angle zoom lens for PENTAX K-mount digital SLR cameras. When mounted on the PENTAX K-1 35mm full-frame digital SLR camera body, this zoom lens provides an ultra-wide-angle focal-length coverage from 15mm to 30mm.
The HD PENTAX-D FA 28-105mm F3.5-5.6ED DC WR is a compact, lightweight standard zoom lens for PENTAX K-mount digital SLR cameras. This new compact, lightweight standard zoom lens provides a focal-length range from wide angle to medium telephoto.
The ‘WR’ in their names means that these lenses are weather-resistant, with SP (Super Protect) coatings on the front lens element to repel water.
Ricoh Announces HD PENTAX-D FA 15-30mm f/2.8 and FA 28-105mm F3.5-5.6 Lenses
Ricoh announces HD PENTAX-D FA 15-30mm f/2.8 lens for new PENTAX K-1 full-frame DSLR
Main Features
1. Exceptional imaging power
When mounted on the PENTAX K-1 35mm full-frame digital SLR camera body, the lens provides an ultra-wide-angle focal-length coverage from 15mm to 30mm. Its exaggerated perspective helps the photographer produce spectacular landscape photographs. With a 30mm focal length at the telephoto end, the lens is also well-suited to portrait and street photography.
2. State-of-the-art optical design
The zoom lens 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.
3. Large-aperture zoom lens, with a maximum aperture of f/2.8
Since this zoom lens provides a maximum aperture of f/2.8 over its entire zoom range, it is versatile enough to be used for many different subjects and scenes, ranging from sweeping landscapes to nightscapes and starry skies. Despite its ultra-wide-angle perspective, it can capture the subject with an excellent bokeh (defocus) effect on the background. Even in macro photography from its minimum focusing distance of 28 centimeters, it can capture subjects with a well-defined sense of depth.
4. Built-in SDM (Supersonic Direct-drive Motor)
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.
5. Weather-resistant construction
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.
6. HD Coating to improve image description
The lens is treated with high-grade, multi-layer HD (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.
7. Other features
- 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 produces 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.
Ricoh announces 28-105mm lens for new PENTAX K-1 full-frame DSLR
For further information, please visit www.ricohimaging.com/pentaxff
Main Features
1. Standard zoom lens covering most frequently-used range
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 aberrations. It delivers high-resolution images by optimizing the imaging power of the PENTAX K-1 camera’s approximately 36.4 effective megapixels. Its compact, lightweight body and excellent cost performance make this lens a perfect companion lens to the PENTAX K-1.
2. Excellent image resolution, complementing the PENTAX K-1 full-frame digital SLR camera performance
With 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. The optics are designed to deliver ample resolving power for the large, high-pixel image sensor, producing well-defined, fine-detailed images.
3. HD Coating to improve image quality
This lens is treated with the high-grade, multi-layer HD (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 that are free of flare and ghost images, even under demanding lighting conditions such as backlight.
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.
