
Binoculars are the go to solution for getting closer to nature, and opening your eyes to incredible sights that our world has to offer.
Able to take in breath taking views, bring far off points into focus and track animals on long hunts, binoculars are becoming indispensable bits of equipment.
But what if you just want to get closer to the smaller things in life, such as plants, local birds and insects? Buying binocular that’s designed to conquer mountain ranges isn’t going to be much good for that…
Click here for more reviews of Pentax Papilio Binoculars
Enter the Pentax PTX62216 8.5x21mm Papilio Binoculars, specifically designed with viewing insects and local birds in mind.
With a multitude of features optimised for this very purpose, in particular the lightweight build and short focus distance, these binoculars are perfect for taking in the butterflies in your garden.
Pentax Papilio Binoculars Video Review – Watch Below

With a budget price tag and out of the box functionality, these binoculars are the ideal addition to anyone’s collection.
Throughout this review we look at the quality, positives and negatives that come with your new binoculars. Spoiler alert, they are awesome.
Pentax Papilio Binoculars Specifications
Pentax Papilio 6.5x21 | Pentax Papilio 8.5x21 | |
---|---|---|
Size | 6.5x21 | 8.5x21 |
Eye Relief | 15 mm | 15 mm |
Field of View | 393 ft/1000 yds | 315 ft/1000 yds |
Close Focus | 1.6 ft | 1.6 ft |
Lenses | Fully Multi-coated Lenses | Fully Multi-coated Lenses |
Weight | 10.2 oz | 10.2 oz |
Dimensions | 4.5 x 4.3 | 4.6 x 4.3 |
READ REVIEWS | READ REVIEWS |
Main Usage For The Pentax Papilio PTX62216 8.5×21 Binoculars
The Papilio binoculars from Pentax have earned themselves the nickname of ‘The Butterfly Binoculars’.
So no prizes for guessing what their main function is. That’s right, you’re correct they were designed for getting up close and personal with the smaller aspects of nature.
With a minimum focus distance of just 18 inches, these are more of a portable microscope than a pair of binoculars.
With such a small focusing distance and a narrow 21mm objective lens, you could look at an insect thats landed on your person with the upmost clarity.
Because of the level of magnification however, these binoculars are also great for getting nearer to avian life, as you’re able to trace their flight with ease and follow them back to their nests.
Where these compact binoculars carry a small price tag, they have big potential. As they can only really be used for close observations, they are an ideal addition to your binocular collection, rather than being your only pair.
They way next to nothing, at less than 300g, so you’ll hardly notice them in your backpack.
Shipped with a range of accessories, these binoculars are as close to a must buy as you are going to get.
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Glass/Lens
Pentax have equipped their Papilio binoculars with fully multicoated optics with BaK-4 reverse prisms.
Due to being purpose designed for short distance observations, there is no need for phase correcting prisms, therefore more attention can be paid to the else.
With full anti-reflective coatings preventing unwanted light overloads, these binoculars guarantee a quality, well lit image at an excellent resolution.
Magnification
The Papilio binoculars offer an 8.5x magnification over a 21mm objective lens.
It’s the narrow objective lens that gives them the title of the pocket microscope, with a narrow field of view designed for honing in on one point of interest rather than a wide scene.
The 8.5x magnification is the perfect middle ground for viewing both insects and tracking birds in flight back to their nests.
Image Quality
The close range image quality of these is really without compare. It’s not an understatement to say that they are a pocket sized microscope.
Because of the minuscule minimum focus distance, there is no need for any phase correcting prisms here, which left Pentax with a bigger budget to spend on the quality of the lens.
Because of this, the detail displayed through these binoculars is second to none, and from as little as 18” from your target thats not mean feat.
Furthermore, unlike other close range binoculars, there’s not image overlapping with each lens, ensuring the best viewing experience possible.
Eye Relief
Pentax have considered the glasses wearing binocular enthusiasts with this set.
Equipped with 15mm of eye relief, there’s just enough room for you and your specs to enjoy getting closer to insect and bird life.
With twist up eyecups, comfort and ease of use is also a guarantee, making these binoculars a joy to behold.
Pros
When it comes down to it, I’ve yet to come across a pair of binoculars that handle up close and personal viewing as well as this pair from Pentax.
With such a short minimum focusing distance, you could watch a butterfly that’s landed on your hand without any image blurring or overlapping of the lenses.
Clarity is spot on, making these binoculars more of a pocket sized microscope than anything else.
Cons
One area where these binoculars do become slightly undone, is that Pentax didn’t account for wet weather conditions.
Where they do come with a rain guard, it’s effectiveness is up for debate, and it can be a lot to carry around on top of the binocs.
By simply adding some sealant these could have been the perfect British summertime companion, but instead, they need to be stored away for the inevitable sporadic downpours.
Conclusions
To sum this review up, if insect or bird watching from a small distance is your game, then by all means proceed to check out.
You’ll be hard pressed to find a better pair of binoculars in a similar price range with the same functionality.
Yes, where they are let you down by a lack of weatherproofing, they make it up to you with their lightweight build and unbelievable image quality.
They are definitely a niche product, so if you’re looking for a multipurpose set of binoculars, you need to track down something with a wider objective lens and larger focus range.
These are a must have no just for the insect enthusiast, but for anyone looking to get that much closer to the immediate outdoors.
