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Pentax 6.5 x 21 Papilio Butterfly Series Binocular

Item #: 43749

Our Price: $114.96

Regular Price: $129.95

SAVINGS: $14.99 (12%)

Pentax Papilio binoculars are the perfect choice for insect observation in the field and in museum and galleries. The enhanced observation capability of the Papilio binoculars is made possible by a Pentax Convergent Lens Optical System Engineering (CLOSE) mechanism. CLOSE automatically slides the left and right objective lenses toward the center when the focus is fixed at a short distance.
  • Revolutionary, dual-axis, single body housing with synchronized eye-piece adjustment to assure correct optical alignment for comfortable viewing.
  • Fast and easy center focusing for handling ease.
  • Helicoid eyepiece rings for extra viewing comfort.
  • Fully multi-coated optics to eliminate harmful ultraviolet rays while improving light transmission for high contrast images with no glare.
  • High-quality BaK-4 prisms transmit more light at the edges to enhance illumination.
  • Tough rubber-coated exterior provides a sure grip and protects the internal mechanisms.
  • Includes neck strap, carry case, and eyepiece lens caps.
  • Type: porro-prism center focusing
  • Objective lens: 2 elements in one group
  • Eyepiece lens: 5 elements in 5 groups
  • Magnification: 6.5X
  • Objective lens diameter: 21 mm
  • Angle of view: 7.5 degrees
  • Apparent field of view: 49 degrees
  • Field of view @ 1000 m: 131 m
  • Field of view @ 1000 yd: 393 ft
  • Exit pupil: 3.2 mm
  • Eye relief: 15 mm
  • Prism: BaK-4
  • Multi-layer coating: yes
  • Relative brightness: 10.2
  • Diopter adjustment range: click-stop adjuster in eyepiece
  • Eye distance adjustment range: 2.2 - 2.9"
  • Focusing range: approx. 0.5 m to infinity
  • Eyepiece ring: helicoid type
  • Vergence correction: focus-coupled correction mechanism
  • Water-resistant: yes
  • Weight: 10.2 oz.


by PowerReviews
Pentax 6.5 x 21 Papilio Butterfly Series Binocular

(based on 1 review)

Reviewed by 1 customer

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from Central Texas

Verified Buyer



      Best Uses

      • Butterflies
      • Flowers
      • Insects

      Comments about Pentax 6.5 x 21 Papilio Butterfly Series Binocular:

      My first experience of viewing bees on Lavender flowers through the Pentax Papilio with the fragrance wafting on the wind was truly invigorating. The flower looked different that at eye level. I can imagine what it is like for a Butterfly or Insect.

      I would have bought the 8.5 X Papilio
      had it been listed on your website at time I purchase--would be better for non-hobbyist, non- bird watcher for birds.
      The eyepieces seem to be getting loose after 6 months.

      • Was this a gift?:
      • No

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      Binocular Size Compact
      Magnification 6.5x
      Lens Coating Multicoated
      Housing Rubber Coated
      Weather Resistant Yes
      Water Proof No
      Fog Proof Yes
      Field Of View 393 feet
      Minimum Focus 10 feet
      Eye Relief 15 mm
      Dimensions 4.5 x 4.3inches
      Weight 10.2 oz

      Would these items help you out on your next adventure?


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