Ultrasonic Motor SDM enables smooth and speedy autofocus
Aero Bright Coating combined with HD Coating on lens elements reduces ghosting and flare in extreme lighting situations
SP Coating on the front lens element repels water and grease
Weather-resistant design enables consistent performance during adverse outdoor conditions
Rounded, 9-blade diaphragm creates smooth and creamy bokeh
A new-generation, high-performance Star-series lens delivering superb imaging power and exceptional resolving power
HD PENTAX-D FA★50mmF1.4 SDM AW
PENTAX conducted an extensive review of the in-house standards for the top-of-the-line Star series, to further improve the imaging performance of PENTAX digital SLR cameras — both existing and future models. This review will result in the development of the new generation of Star-series lenses. The first model of this series is the HD PENTAX-D FA★ 50mmF1.4 SDM AW.
Thanks to a minimum focusing distance of just 40 centimeters, the lens has the versatility for use in a wide range of subjects and scenes, including the photography of flowers and table settings.
Since the lens de-emphasizes the edges of the light source, it creates a natural, true-to-life bokeh effect. It also prevents vignetting from affecting the defocused peripheral areas of the image field, allowing you to emphasize the bokeh effect in the resulting image.
Even at open aperture, the lens optimizes the subject’s beauty and elegance with sharply focused eye areas and fresh, lively skin tones. The natural bokeh effect is another distinguishing feature of this lens.
The lens is treated with PENTAX-developed Aero Bright Coating II — a lens-coating nanotechnology employing a super-low refractive film fabrication process.
Aperture : F1.4 : Shutter speed : 1/1600 second ISO :100
Photographer Masatsugu Ide
In addition to a modified gauss-type rear focus-lens group, the lens also features a group of aberration-correction elements in its front optical group, which effectively compensate for aberrations which cannot be corrected by a modified gauss-type group. The lens therefore assures uniform resolving power and excellent color reproduction from the center to the edges of the image field
Dustproof, weather-resistant All Weather (AW) construction to optimize
New-generation SDM — a ring-type ultrasonic wave motor that generates 7.5 times more torque than conventional motors
Simple, sturdy yet attractive design
― Imaging performance at any time, and in all shooting conditions
Developed as an All Weather (AW) model, the lens features a dependable dustproof, weather-resistant structure with eight special seals to prevent the intrusion of water and dust into the lens interior. When paired with a PENTAX dustproof, weather-resistant digital SLR camera body, it forms a durable, reliable digital imaging system that performs superbly in demanding shooting settings — even in rain or mist, or at locations prone to water splashes or spray.
It also responds to the exacting demands of professional photographers: its focus ring is ideally shaped to assure firm hold and error-free focusing operation even with a wet or gloved hand; it provides dependable operation at a temperature from -10°C to 40°C; and it features the high-rigidity lens barrel structure required for field photography.
The lens barrel has been designed for a superior appearance. It features a panel line accentuated with the leveled construction of parts, and a uniformly designed body line all the way to the exclusive flower-shaped lens hood. Including the gold line symbolic of the Star-series lens and the familiar deep-green ring — a trademark of PENTAX interchangeable lenses — the lens is in keeping with a design concept standardized for both color scheme and parts positioning. This design concept will be applied to future Star-series lenses, as a reminder of the consistency and dependability of the PENTAX Star series.
In order to shift the heavy, rear focus-lens group more smoothly and efficiently during focusing operation, the lens features a newly developed ring-type ultrasonic wave motor SDM, which generates as much as 7.5 times the torque of the compact SDM installed in existing DA★-series lenses.
Image rendition at open aperture
Aero Bright Coating II / HD Coating ― State-of-the-art coating technology
A minimum focusing distance of 40cm
Aperture : F1.4 Shutter speed : 1/400 second : ISO 100