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Named for the Latin word for butterfly, PENTAX Papilio 8.5x21 binoculars are the perfect choice for insect observation in the field and in museums and galleries. The enhanced observation capability of the Papilio binoculars is made possible by a PENTAX Convergent Lens Optical System Engineering (CLOSE) mechanism. The CLOSE mechanism 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 or flare High quality BaK4 prisms transmit more light at the edges to enhance illumination for easier viewing in dim light Included Accessories - Eyepiece lens caps, Case, Neck strap Binocular Type - Porro-prism, center focusing Lens Construction - Objective Lens - 2 elements in 1 group Eyepiece Lens - 5 elements in 5 groups Magnification - 8.5X / Objective Lens Diameter - 21mm Field of View - Real - 6.0 degrees /Apparent - 51 degrees / Field Of View At 1000 Meters - 105m / Field of View at 1000 yards - 315 ft. Diopter Adjustment Range - +/- 4 m -1 / Diopter Adjustment - Click-stop adjuster built in right eyepiece Dimensions (Height Width) - 4.6 x 4.3 inches (116 x 110mm) Thickness - 2.2 inches (55mm) / Weight - 10.2 oz. (290g) Pentax Limited lifetime warranty
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Technical Details
- No other binoculars like them on the market!- Ideally suited for viewing insects, birds, artwork or any other object at close ranges
- C.L.O.S.E. (Convergent Lens Optical System Engineering) allows them to focus down to 1.6 feet
- Tough rubber covered exterior provides a sure grip and protects the internal mechanisms
- Revolutionary dual-axis, single body housing with synchronized eye-piece adjustment to assure correct optical alignment for comfortable viewing
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By bee guy (Volcano, Hawaii)
With so many companies making low quality, identical binoculars it's surprising that no one else makes close-focusing ones like these, and even more so that they're so good and inexpensive. I guess you could get slightly lighter ones but they're not worth it given the extra close range you get with these (and they are quite light, if not that compact). The worst fault I can find is that they focus a long way past infinity, but that's hardly a problem. Definitely the best binoculars for the money.
By Wendy Hoskins
These binocs are amazing! I use them for everything from bird watching to spotting my partner at the range. They are very high quality and I love them. At long distances you can see things you never would have thought were there, and at close distances it's like looking through a an at least semi-high power magnifying glass. The focus dial is very solid feeling and has just the right amount of resistance, and they feel great for holding. I would definatley recommend these binocs to a friend.
By Timothy B. Riley (San Antonio, TX USA)
If you are a serious observer of nature you will probably want to own more than one pair of binoculars. Hunters have more than one rifle, musicians have more than one instrument and birders (and other naturalists) should have not only a back-up pair but also alternative binoculars that are better suited for specific situations. I have high magnification, compact and high definition pairs.
I bought the Pentax 8.5x21 binoculars for a couple of reasons. I like the fact that they are small and compact and for a porro-finder design they are unusually bright and easy to view through. The main reason won't come as a surprise to anyone, I like them because they focus so close. My longer optics (Canon 18x and 15x) will only focus down to 12' or so. This is fine for most applications but not all, especially when trying to look at hummingbirds or any other object that will allow you to get 5' or closer. I often pack these when for birdwatching trips as a back-up. When we come upon something unexpected (like an array of tiny bats on a tree in the Amazon or a huge spider in southwest New Mexico) everyone wants to use my Pentax binos. If you are into butterflies or insects this is the pair for you.
Both of the binoculars in the Papilio series are of an unique "reverse porro-finder" design, meaning that the front elements are closer together than the eyepieces are. It makes for a surprisingly ergonomic feel since the little bit of weight (these are very light binos) is shifted towards the rear, where they will get more support from your grip. I have a little bit of problem with the interocular distance because my eyes are somewhat far set but I got used to it. These are easy to stick in my briefcase or geocaching bag when I don't think that I'll need one, and that always seems to be the time when you wish that you had a pair of binoculars regardless of the magnification. All in all a great choice for an auxiliary pair of close-focusing pair of binoculars.
By Craig (Massachusetts)
I was very happy with this item. I wanted a pair of binoculars primarily to better see some of the birds around our house. The close up focus is an unexpected but welcome addition to a pair of binoculars. I couldn't be happier with this item. It seems very well constructed. The only criticism I have is I could find no description of the lens material or coating on the instructions or specifications provided with these binoculars, so comparison with other brands is a bit more difficults.
By Alethea
You got a small yard and love bird watching? You NEED these! They are GREAT! I was looking for binocs that would let me focus on birds IN my yard rather than beyond my yard (my backyard is only about 15 feet deep) and I stumbled upon these! I was hesitant at first because I'm hesitant by nature, but I am SO GLAD I bought these. They are lightweight and easy to use! GET THEM!
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