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Press Release

August 21, 2009


— High class binoculars with a lightweight design
and outstanding maneuverability


HOYA CORPORATION PENTAX Products is pleased to announce the PENTAX 9×28 DCF LV binoculars, high-class roof-prism binoculars that realize outstanding maneuverability through a lightweight design, and an advanced optical system which offers a bright and clear field of view, as well as high waterproofing/impact-resistant properties.

♦ PENTAX 9×28 DCF LV [ ⇒ Product Image]
Major Features
  1. Bright and clear field of view

    For the 9×28 DCF LV, multi-coating is applied on all lenses surface as well as the permeable surface of the prism to significantly improve the light transmission. In addition, phase correction coating, to increase the resolution and contrast, and high-reflection coating, to increase reflectivity, are applied to the reflecting surface of the prism. A bright and clear field of view even of peripheral areas is obtained through this prism that uses 3 types of coatings and high-refraction glass BaK4.
  2. Lightweight design

    The 9×28 DCF LV uses reinforced plastic for its main body material, realizing the lightweight binoculars while securing high rigidity. Outstanding maneuverability is also achieved through a compact design with 28mm objective lens.
  3. Waterproofing capability

    The 9×28 DCF LV is equipped with waterproofing capabilities* (JIS Class 6 equivalent, water resistant to a depth of 1m (3.3 feet) ) that can be used in wet conditions, and can be rinsed in water when they get dirty. In addition, filling nitrogen gas inside the main unit, which is fully-sealed, prevents the inner surface of the lens from becoming fogged due to differences in temperature.

    *The 9x28 DCF LV cannot be used in underwater.

  4. Full rubber coating

    In addition to improving the grip by using full rubber coating on the exterior, the 9×28 DCF LV realizes great impact resistance.
  5. Other features

    1. Inner focus optical design that contributes to the compactness of the design
    2. Click-stop diopter adjustment ring guards accidentally moving the diopter setting
    3. Long eye relief design that enables comfortable viewing over long periods of time and easy viewing for people who wear glasses
    4. Four-stop rotating and sliding eyepiece rings that enables for fine adjustments to make viewing through the binoculars easy and comfortable
    5. Minimum focus distance of approximately 3m (10 feet) for observation of nearby subjects
    6. Rain shield-type eyepiece caps that block infiltration of water drops and dust
  • PENTAX is a trademark of HOYA CORPORATION.
  • Design and Specifications is subject to change without notice.
Model 9x28 DCF LV
Type Roof-prism center focusing ( Inner focusing )
Lens construction Objective lens 3 elements in 2 groups
Eyepiece lens 5 elements in 4 groups
Coating Lens Full Multi Coating
Roof-prism Phase Coating
Sub prism Super-refrection coating
Magnification 9 x
Objective lens Diameter 28mm
Real field of view 5.6°
Apparent field of view 50°
Field of view at 1000 m 98 m
Field of view at 1000 yard 294 ft
Exit pupil 3.1mm
Eye Relief 18mm
Relative Brightness 9.6
Diopter adjustment range ± 4 m-1
Diopter adjustment Diopter ring with click stop
Eye Width adjustment range 58 to 72mm 2.3 to 2.8inch
Focusing range Approx 3 m to infinity 9.9 ft to infinity
Eyepiece ring Helicoid eyepiece ring (4 click stop)
Body color Black
Height & Width 117 x 115 mm 4.6 x 4.5 inch
Thickness 44 mm 1.8 inch
Weight 365 g 12.9 oz
Waterproof 1 m depth of water, Nitrogen filled
Accessories Rain shielding eyepiece cap (Eyepiece lens cap), Case, Neck strap
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