- Compact "Take-Anywhere" Design
- Roof Prism Light Path
- Anti-Reflection Multicoatings
- Closed Bridge Configuration
- Slip-Resistant Center Focus Knob
- Twist-Up Rubber Eyecups
- Case and Neck Strap
The optical system is multi-coated to prevent unnecessary light reflection, achieving excellent image performance with reduced flare and ghosting.
The Pentax UD 10X21 optics offer even higher power at 10X magnification, while retaining the same compact body size. With a choice of two magnifications, the PENTAX UD series assures comfortable viewing in a variety of applications, while excelling in cost performance.
Compact, lightweight design
The PENTAX UD series features a compact, palm-sized body and weighs approximately 195 grams (6.9 ounces)—the lightest of all existing PENTAX binoculars. Its compact, easy-to-hold body assures outstanding portability in a wide range of applications, from nature observation to the viewing of sports, concerts and theatrical performances.
Bright, clear viewing
Thanks to the incorporation of multi-coated optics designed to eliminate excessive reflection, the PENTAX UD series delivers a bright, clear view of the subject free of flare and ghost images. The PENTAX UD 9X21 features fully multi-coated optics — a multi-layer coating applied to all reflective lens surfaces — to assure an especially bright view of the subject.
(Note: The PENTAX UD 10X21 has a single multi-coated lens, while other lenses are treated with a single-layer coating.)
Other features
- A minimum focusing distance of approximately three meters for a sharp view of close-range subjects
- Nonslip diopter rings for easy, error-free diopter adjustment
- Optional TP-3 tripod adapter (currently available) for installation on a tripod