Datasheet

High-Refraction BaK4 Glass Prism
Due to its outstanding refraction index, the BaK4
glass prism is highly acclaimed for its perfectly round
exit pupil and clear, unvignetted image.
Aspherical Optical Elements
The PENTAX aspherical optical elements greatly
improve image brightness and sharpness, while
minimizing disturbing distortions.
High-Resolution Phase Coating
The roof prisms of all DCF series models are specially
treated with high-resolution phase coating. Previously
incorporated only in the most expensive models, this
special process cancels the phase difference created on
the wave front of light passing through a roof prism,
thus producing sharp, high-contrast images with much
improved resolution.
Inner-focus Optical Design
Incorporated in all DCF series models, plus the UCF
and PCF WP II models, this sophisticated optical
design is ideal for waterproof models that require a
fully airtight body construction. It also contributes
to a considerable reduction in size and weight and
improves overall balance by minimizing weight shift
during focusing.
Functional, Maneuverable Body Design
The body and optical mechanism of PENTAX
binoculars and spotting scopes are computer-
designed to ensure the easiest handling possible and
minimize overall size and weight, without sacrificing
optical performance.
BINOCULAR TECHNOLOGY
3
BaK4
Image
Eyepiece
BK7
Conventional lens
Aspherical len
s
Focusing lens
Objective lens
Eyepiece lens
Roof prism