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Pentax 8.5x21 Papilio Binocular

  • Price: $136.00
  • B&H # PE8.5X21P
  • Mfr# 62216

Product Highlights

  • Compact Porro Prism
  • 6.0° Angle of View
  • Extreme Close Focusing Capacity
 

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The Papilio is a special star all by its lonesome, and should prove to be a popular addition to the Pentax collection of binoculars.

Papilio is the Latin word for butterfly, and this binocular is an ideal companion for observing insects, museum artifacts and(of course) butterflies at incredibly close range.  The close focusing capacity of a binocular is in some measure quite limited by the position of the objective lenses themselves, but this particular Pentax has a unique Convergent Lens Optical System which brings the objective lenses closer as the focusing dial is adjusted to shorter distances.  Thus the left and right fields of view are once again aligned, and the end result of all this is that you can have razor-sharp observing at just 1.6' (0.5 m)!  Take them to the zoo and enjoy the stark realities of the reptile house like never before.  Be fascinated by intricate details of a skittish species at your local aquarium.  And, of course, it is a great binocular at more conventional focusing range as well.

Sharing much of the design elements of the other "reverse porro" binoculars from Pentax, this unit has the family trait of a dual-axis interpupillary adjustment mechanism.  Moving one barrel cause the other to move as well, making for speedy adjustments, an eternally centered bridge and a more durable unit less likely to be misaligned from shocks.   The Pentaxes are also amongst the very rare compact porros to offer an integrated tripod socket and an optional tripod adapter, which is great with a monopod for long walks in the woods with the unit.

Well suited to travel, museums and sports/theatre events
Sliding eyecups
BaK-4 Porro prisms and multicoated lenses
Integrated ±4 dioptric correction
56-74mm Interpupillary adjustment range
Pentax "Worry Free" Warranty
Pentax will repair or replace this binocular to the original purchaser (even if damaged by fault) for a charge of $19.95.  This warranty does not cover cosmetic damage, theft or loss.  Replacement may be with comparable model at Pentax's discretion if the original model is no longer available.
Prism Type Porro
Magnification 8.5x
Objective Lens Diameter 21 mm
Angle of View 6.0°
Field-of-View 315' @ 1000 yd / 104.58 m @ 1000 m
Minimum Focus Distance 1.64' / 0.5 m
Exit Pupil Diameter 2.5  mm
Eye Relief 15  mm
Interpupillary Adjustment 56 - 74 mm / 2.20 - 2.91"
Dioptric Correction Not Specified By Manufacturer
Focus Type Center
Tripod Mount Yes 1
Please Note:

Tripod 'spacer', such as Pentax's #69552 adapter, is recommended.

close
Dimensions 4.49 x 2.56 x 4.33" / 11.40 x 6.50 x 11.00  cm
Weight 10.23 oz / 290 g
Pentax 8.5x21 Papilio Binocular
  • #69639 Soft Case
  • Strap
  • Eyepiece Rainguard (Replacement)
  • Pentax "Worry Free" Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    Pentax8.5x21 Papilio Binocular
     
    4.8

    (based on 28 reviews)

    Ratings Distribution

    • 5 Stars

       

      (23)

    • 4 Stars

       

      (4)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (0)

    96%

    of respondents would recommend this to a friend.

    Pros

    • Close focus (24)
    • Quality lenses (24)
    • Compact (23)
    • Lightweight (21)
    • Strong construction (19)

    Cons

      Best Uses

      • Bird watching (22)
      • Wildlife viewing (18)
      • Sporting events/concerts (12)
      • Hunting (8)
        • Reviewer Profile:
        • Casual/ recreational (16), Avid adventurer (9)
        • Was this a gift?:
        • No (12)

      Most Liked Positive Review

       

      Terrific piece of compact optics

      This is the best pair of binoculars I have purchased so far in this price range. I've owned a compact Nikon and Olympus with higher magnification and they just don't compare. I don't know ...Read complete review

      This is the best pair of binoculars I have purchased so far in this price range. I've owned a compact Nikon and Olympus with higher magnification and they just don't compare. I don't know how Pentax managed to squeeze all this quality into a pair of compact sport optics. Although 8.5 magnification doesn't seem like a high number, the image quality is superb and to top it all off, you can zoom in on objects as close as 1.5 feet. I have tried even closer and it still worked. Coins and bugs look larger than life.

      VS

      Most Liked Negative Review

       

      Uh...really?

      Bought this after reading many glowing reviews and very few negative ones. Having purchased and used this product, I simply can't believe that there aren't more negative reviews. I can understand where the reviews...Read complete review

      Bought this after reading many glowing reviews and very few negative ones. Having purchased and used this product, I simply can't believe that there aren't more negative reviews. I can understand where the reviews might be positive overall since it's a rather unique model, but still...I'm not super knowledgeable about optics terminology, but I have experience using many different binoculars, from a $25 pair to a $1,200 pair, and I can tell you how these compare to what I've used. The first thing I have to say about the Papilio is that I have a very difficult time both attaining and maintaining a steady view, as the slightest bump or arm adjustment causes the image to go mostly or completely black. I have had this problem with other binoculars, but it has never been so pronounced. I can't rest the eye cups against my eye sockets as I must hold the binocular away from my head a bit in order to get the image to look right. Again, I don't know the proper terms to describe these things, but hopefully you get the idea. Putting the eyecups down or at the halfway point only makes the problem worse. Maybe other people don't have this problem? One of the two binoculars I use most often is a similar $100 reverse porro with similar optical quality, but the view I get is as steady as a rock from the moment I raise the binocular to my eyes. Also, the magnification of small object via the close focus feature just isn't that impressive. It's cool just to be able to focus a binocular on close objects, to play with it a little, but the actual view isn't close to being as striking as some people (who apparently have never used a quality, high power magnifying glass) make it out to be. I mean, it's cool, but it's something that I already achieve (usually more successfully) with other instruments (magnifier, $100 camera lens, etc.) Why am I going to fool around with this shaky, touchy binocular when I can take a 5+ power magnifying glass, get basically the same view (the binocular effect doesn't do much for me at close distances) with twice the stability and ease of use?The quality of the optics, once I do attain a steady image, are reasonably good and about what I expect for a binocular of this price (maybe a bit less).

      Reviewed by 28 customers

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      Displaying reviews 1-20

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      5.0

      Fantastic close focus binoculars

      By Capnbob45

      from Downingtown, PA

      About Me Avid Adventurer

      Verified Buyer

      Pros

      • Close Focus
      • Compact
      • Lightweight
      • Quality Lenses
      • Strong Construction

      Cons

      • Carry Case Not Big Enough

      Best Uses

      • Bird Watching
      • Hunting
      • Mineral Collecting
      • Sporting Events/Concerts
      • Wildlife Viewing

      Comments about Pentax 8.5x21 Papilio Binocular:

      These binoculars are excellent from eighteen inches to infinity. The view is clear, bright and easy to focus. At anything closer than 8.5 feet, it is essentially a stereo microscope! I would recommend them to anyone interested in birding and insect observation and I intend to use them mineral collecting to check places that I can't reach and as a field stereo microscope.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      Great buy

      By Agustin

      from McAllen, TX.

      About Me Professional Guide

      Verified Buyer

      Pros

      • Close Focus
      • Compact
      • Lightweight
      • Quality Lenses
      • Strong Construction

      Cons

        Best Uses

          Comments about Pentax 8.5x21 Papilio Binocular:

          I own a pair of binocular which I use for birding, but I needed a pair for closeups. So, I asked sereval of my friends which also own a pair of Pentax 8.5x21 and got thier piont of view. All were happy and some owned a few pairs. So I went to B&H reviews and it seemed customers were also happy with this model. I purched my Pentax binoculars a few weeks ago and I am very happy with the sharpness.

          • Was this a gift?:
          • No

          Share this review

           
          5.0

          More than expected

          By Steffler80

          from Mont-Laurier, QC, CA

          About Me Avid Adventurer

          See all my reviews

          Verified Buyer

          Pros

          • Close Focus
          • Compact
          • Lightweight
          • Quality Lenses
          • Strong Construction

          Cons

            Best Uses

            • Bird Watching
            • Hunting
            • Sporting Events/Concerts
            • Wildlife Viewing

            Comments about Pentax 8.5x21 Papilio Binocular:

            Fantastic quality for the price. When I first saw the description, I was no really believing the 1'6" close focus, but when I tried, I could not believe not eyes. More, they are as good for medium-long range than for close range observation, making them perfect for birding. I'm using them even inside my home in low light and can see razor sharp details on everything I looking at and for that, Pentax is a very high quality optics for the price. Will be very hard to wait for summer to look at insects.

            • Was this a gift?:
            • No

            Share this review

             
            5.0

            Compact and Clear

            By Mary

            from Ames, Iowa

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Close Focus
            • Compact
            • Lightweight
            • Quality Lenses
            • Works Well With Glasses

            Cons

              Best Uses

              • Bird Watching

              Comments about Pentax 8.5x21 Papilio Binocular:

              The compact size is great! Very easy to focus, and I love the lens caps- they are attached to the strap and not loose. Would highly recommend for bird-watching.

              Share this review

               
              5.0

              Simply the best

              By Steffler80

              from Mont-Laurier, QC, CA

              About Me Avid Adventurer

              See all my reviews

              Verified Reviewer

              Pros

              • Close Focus
              • Compact
              • Crystal Clear View
              • Lightweight
              • Quality Lenses
              • Razor Sharp Details

              Cons

              • Not Waterproof

              Best Uses

              • Bird Watching
              • Hunting
              • Sporting Events/Concerts
              • Wildlife Viewing

              Comments about Pentax 8.5x21 Papilio Binocular:

              I already have a pair of binoculars 15x70 for astronomy, but found to heavy to carry all day long in the woods for birding. And then I ordered Pentax Papilio 8.5x21. I thought it would not be very bright cause of their 21mm lenses, but when I tried first time, I've been stunned. Even inside my house, without much light, I was able to have a very close view with razor sharp details. Tried the closest range possible and found that the 0,5m is true. More than that, the view is the same with distant viewing. The same crystal clear view than my 15x70, with a lower magnification and a closer view possible. Simply the best around.

              • Was this a gift?:
              • No

              Share this review

               
              4.0

              compact easy to use

              By j

              from wi.

              About Me Casual/ Recreational

              Verified Buyer

              Pros

              • Close Focus
              • Compact
              • Lightweight
              • Quality Lenses
              • Strong Construction
              • Works Well With Glasses

              Cons

                Best Uses

                • Bird Watching
                • Hunting
                • Sporting Events/Concerts
                • Wildlife Viewing

                Comments about Pentax 8.5x21 Papilio Binocular:

                We like to take the binoculars hiking to view birds and wild life and also to foot ball games. 8.5 is a compromise between a 10x and 6x less close up power but wider angle of vew than 10x more close up power and narrower field of view. good bright easy to use

                • Was this a gift?:
                • No

                Share this review

                (0 of 2 customers found this review helpful)

                 
                2.0

                Uh...really?

                By NFBIRDER

                from NY

                About Me Avid Adventurer

                Pros

                • Close Focus

                Cons

                • Unstable

                Best Uses

                • Wildlife Viewing

                Comments about Pentax 8.5x21 Papilio Binocular:

                Bought this after reading many glowing reviews and very few negative ones. Having purchased and used this product, I simply can't believe that there aren't more negative reviews. I can understand where the reviews might be positive overall since it's a rather unique model, but still...I'm not super knowledgeable about optics terminology, but I have experience using many different binoculars, from a $25 pair to a $1,200 pair, and I can tell you how these compare to what I've used. The first thing I have to say about the Papilio is that I have a very difficult time both attaining and maintaining a steady view, as the slightest bump or arm adjustment causes the image to go mostly or completely black. I have had this problem with other binoculars, but it has never been so pronounced. I can't rest the eye cups against my eye sockets as I must hold the binocular away from my head a bit in order to get the image to look right. Again, I don't know the proper terms to describe these things, but hopefully you get the idea. Putting the eyecups down or at the halfway point only makes the problem worse. Maybe other people don't have this problem? One of the two binoculars I use most often is a similar $100 reverse porro with similar optical quality, but the view I get is as steady as a rock from the moment I raise the binocular to my eyes. Also, the magnification of small object via the close focus feature just isn't that impressive. It's cool just to be able to focus a binocular on close objects, to play with it a little, but the actual view isn't close to being as striking as some people (who apparently have never used a quality, high power magnifying glass) make it out to be. I mean, it's cool, but it's something that I already achieve (usually more successfully) with other instruments (magnifier, $100 camera lens, etc.) Why am I going to fool around with this shaky, touchy binocular when I can take a 5+ power magnifying glass, get basically the same view (the binocular effect doesn't do much for me at close distances) with twice the stability and ease of use?The quality of the optics, once I do attain a steady image, are reasonably good and about what I expect for a binocular of this price (maybe a bit less).

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Wow, is what you'll say

                By John

                from Austin, TX

                About Me Casual/ Recreational

                Pros

                • Close Focus
                • Compact
                • Lightweight
                • Quality Lenses
                • Strong Construction
                • Waterproof
                • Works Well With Glasses

                Cons

                  Best Uses

                  • Bird Watching
                  • Wildlife Viewing

                  Comments about Pentax 8.5x21 Papilio Binocular:

                  I spend a lot more time looking at close things than far, and I love the option to decide by using the same tool.

                  It's weird, I enjoy not only looking at plants, bugs, etc, but also wood, dirt, rocks, etc, because of the texture and designs. It never gets old and I feel like a child on discovery. Makes you appreciate God's creation even more.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  8.5x21 Papilio Binocular by Pentax

                  By mr g

                  from Danville, CA

                  About Me Casual/ Recreational

                  Verified Buyer

                  Pros

                  • Close Focus
                  • Compact
                  • Lightweight
                  • Quality Lenses
                  • Strong Construction

                  Cons

                    Best Uses

                    • Bird Watching
                    • Sporting Events/Concerts
                    • Wildlife Viewing

                    Comments about Pentax 8.5x21 Papilio Binocular:

                    A great and unusual binocular, perfect for distance but amazing for close up viewing. Very clear and bright optics.

                    • Was this a gift?:
                    • No

                    Share this review

                    (0 of 1 customers found this review helpful)

                     
                    4.0

                    Overperformer Binoculars

                    By tlu

                    from Wet Pacific Northwest

                    About Me Avid Adventurer

                    Verified Buyer

                    Pros

                    • Close Focus
                    • Compact
                    • Lightweight
                    • Price
                    • Quality Lenses

                    Cons

                    • None so far

                    Best Uses

                    • Bird Watching
                    • Macro Nature Watching
                    • Sporting Events/Concerts
                    • Wildlife Viewing

                    Comments about Pentax 8.5x21 Papilio Binocular:

                    First I'm a tough critic so 4 stars. Perfection is hard to find. However for a little more than 1 Franklin bill I think this is as close as you can come for binoculars.

                    The 8.5x21 Pentax Papilio are amazing for close in focus. Flowers, plants, insects are all enlarged to HD vision. Wonderful! For birding and nature observing again wonderful. I will say that you do rotate the focus a bit more than other binoculars but think of this as fine tuning. I sometimes wonder if I'm using binoculars or a microscope.

                    If you are looking for a quality, inexpensive binocular the Papilio should be in your short list of options.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    The one and only of its kind

                    By Denis

                    from Toronto, ON

                    About Me Casual/ Recreational

                    Verified Buyer

                    Pros

                    • Close Focus
                    • Lightweight
                    • Quality Lenses

                    Cons

                      Best Uses

                      • Butterfly observation
                      • Museumchurch visits

                      Comments about Pentax 8.5x21 Papilio Binocular:

                      It focuses so close, it's unbelievable.
                      The 8x is good for distant subjects too but I should have chosen the smaller magnification. This binocular excels at closeup and you don't usually need 8x for closeup. Stick with the smaller magnification and you'll also get a slightly larger exit pupil and more light in.
                      All in all though, I am very happy with this product.
                      Denis M

                      • Was this a gift?:
                      • No

                      Share this review

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      These Binoculars are truly amazing!

                      By Beekeeper

                      from Jacksonville, Florida

                      About Me Casual/ Recreational

                      Verified Buyer

                      Pros

                      • Close Focus
                      • Compact
                      • Lightweight
                      • Quality Lenses
                      • Strong Construction
                      • Works Well With Glasses

                      Cons

                        Best Uses

                        • Bird Watching
                        • Insect Viewing
                        • Sporting Events/Concerts

                        Comments about Pentax 8.5x21 Papilio Binocular:

                        I was looking for Binoculars with which to observe my bees behavior at the hive entrance. Because of their short minimum focus they are ideal for observing insects and birds. I also took them to the symphony where their size and Pentax optics made them a perfect choice. I love them.

                        • Was this a gift?:
                        • No

                        Share this review

                         
                        5.0

                        Great Binoculars

                        By Angelo G

                        from Spring Hill

                        About Me Casual/ Recreational

                        Verified Buyer

                        Pros

                        • Compact
                        • Lightweight
                        • Quality Lenses
                        • Strong Construction
                        • Works Well With Glasses

                        Cons

                          Best Uses

                          • Bird Watching
                          • Hunting
                          • Wildlife Viewing

                          Comments about Pentax 8.5x21 Papilio Binocular:

                          Great for bird watching. Light to carry.

                          • Was this a gift?:
                          • No

                          Share this review

                           
                          5.0

                          Really happy with these Binoculars

                          By Happy Pentax users

                          from Boston

                          About Me Avid Adventurer

                          Verified Buyer

                          Pros

                          • Close Focus
                          • Compact
                          • Lightweight
                          • Quality Lenses
                          • Strong Construction
                          • Works Well With Glasses

                          Cons

                            Best Uses

                            • Bird Watching
                            • Sporting Events/Concerts
                            • Wildlife Viewing

                            Comments about Pentax 8.5x21 Papilio Binocular:

                            I have used other Binoculars and this Pentax model is very very easy to use for a compact binocular.

                            The optics are very good but the ease of use wins every time.

                            • Was this a gift?:
                            • Yes

                            Share this review

                             
                            5.0

                            Terrific piece of compact optics

                            By Tony the Gadget Lover

                            from Clifton, NJ

                            About Me Casual/ Recreational

                            Verified Reviewer

                            Pros

                            • Close Focus
                            • Compact
                            • Doubles as a magnifier
                            • Lightweight
                            • Quality Lenses
                            • Strong Construction
                            • Stylish and powerful

                            Cons

                              Best Uses

                              • Bird Watching
                              • Sporting Events/Concerts
                              • Wildlife Viewing

                              Comments about Pentax 8.5x21 Papilio Binocular:

                              This is the best pair of binoculars I have purchased so far in this price range. I've owned a compact Nikon and Olympus with higher magnification and they just don't compare. I don't know how Pentax managed to squeeze all this quality into a pair of compact sport optics. Although 8.5 magnification doesn't seem like a high number, the image quality is superb and to top it all off, you can zoom in on objects as close as 1.5 feet. I have tried even closer and it still worked. Coins and bugs look larger than life.

                              Share this review

                               
                              5.0

                              Fantastic functionality - One of a kind

                              By Honolulu Harry

                              from Thousand Oaks, CA

                              About Me Casual/ Recreational

                              Verified Reviewer

                              Pros

                              • Close Focus
                              • Compact
                              • Lightweight
                              • Quality Lenses
                              • Strong Construction
                              • Works Well With Glasses

                              Cons

                              • None

                              Best Uses

                              • Bird Watching
                              • Hunting
                              • Insect Viewing
                              • Museum exhibit viewing
                              • Sporting Events/Concerts
                              • Wildlife Viewing

                              Comments about Pentax 8.5x21 Papilio Binocular:

                              Expands your idea of what binoculars are for. Great as standard compact binos, sharp, bright images, well built, comfortable to use. The close focus feature will blow your mind! I go birding & on nature walks and the ability to study insects up close with these is amazing! If I could only own 1 pair of binoculars these would be it. Buy these to please yourself and amaze your friends! I got mine from B&H + Pentax 8x40 binos, great price [...]

                              Share this review

                               
                              5.0

                              Great binocular

                              By Scott the Photographer

                              from Buzzards Bay, MA

                              About Me Casual/ Recreational

                              Verified Buyer

                              Pros

                              • Close Focus
                              • Compact
                              • Lightweight
                              • Quality Lenses
                              • Strong Construction

                              Cons

                                Best Uses

                                • Bird Watching
                                • Hunting
                                • Sporting Events/Concerts
                                • Wildlife Viewing

                                Comments about Pentax 8.5x21 Papilio Binocular:

                                I love this binocular, I have many different sizes and types of binoculars,but these are easy to take with you anywhere,they have sharp optics and focus about 18inches or less. all for a very reasonable price.

                                Share this review

                                 
                                4.0

                                Awesome short and long range binocular

                                By OutdoorLover

                                from Chico,ca

                                About Me Casual/ Recreational

                                Verified Buyer

                                Pros

                                • Close Focus
                                • Compact
                                • Lightweight
                                • Quality Lenses

                                Cons

                                  Best Uses

                                  • Bird Watching
                                  • Wildlife Viewing

                                  Comments about Pentax 8.5x21 Papilio Binocular:

                                  Great for looking at hummingbirds, butterflies and insects from a close range. Compact. Works well for long distance also. Probably not the scope to use in low light

                                  Share this review

                                   
                                  5.0

                                  Fantastic stereo microscope

                                  By rowly

                                  from Palm Desert CA

                                  About Me Avid Adventurer

                                  Verified Buyer

                                  Pros

                                  • Close Focus
                                  • Quality Lenses
                                  • Strong Construction

                                  Cons

                                  • Bulky

                                  Best Uses

                                  • Bird Watching
                                  • Identifying insects
                                  • Wildlife Viewing

                                  Comments about Pentax 8.5x21 Papilio Binocular:

                                  I have other more expensive binoculars but these are by far the far the most used. So versatile a butterfly or the small details of flowers just fill the view with such clarity.

                                  Share this review

                                  (1 of 1 customers found this review helpful)

                                   
                                  5.0

                                  A Top Buy

                                  By Jake 43

                                  from Brisbane Australia

                                  About Me Casual/ Recreational

                                  Verified Buyer

                                  Pros

                                  • Close Focus
                                  • Compact
                                  • Lightweight
                                  • Quality Lenses
                                  • Strong Construction
                                  • Works Well With Glasses

                                  Cons

                                    Best Uses

                                    • Bird Watching
                                    • Hunting
                                    • Wildlife Viewing

                                    Comments about Pentax 8.5x21 Papilio Binocular:

                                    Small, light, solid construction,superb image quality and bright for a binocular with small objective lens. Great for viewing over a distance with close resolution capabilities, easy to adjust and use. A good companion for my DSLR. Nice case.
                                    All that I expected and great value for money.
                                    B+H are easy to deal with and I'm glad I purchased from them.

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