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Pentax 8×40 Jupiter Binoculars


Key Features
  • Large Objective Lenses for Bright Image
  • Rubber Armor for Durability & Comfort
  • Easy Center Focus


“Great glass in these. Images are bright and colorful. Very very little aberration, sharpness is crisp.”

Product Description

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Pentax 8×40 Jupiter Binoculars

These Pentax 8×40 Jupiter Binoculars are amazing quality for this price point – they are super bright, a good size and perfect for all ages.

Enjoy a sharp, clear view while birding or traveling with the Pentax 8×40 Jupiter Binoculars. Rubber armored for durability and a comfortable grip, these binoculars offer a sense of depth and a wide field of view, along with a close-focus distance of under 20′. The 40mm objective lenses admit lots of light for a bright view in even low-light conditions. The center focus adjustment knob is easy to reach so you can effortlessly dial in a tack-sharp image. For fully shake-free viewing, mount the binoculars on a tripod using a TP-3 adapter, available separately.


Cost-effective Pentax 8×40 Jupiter Binoculars, best suited for beginners, that provides a bright and clear view.

◆Porro prism type binoculars with large objective lenses that produce a bright view with a sense of depth

◆The latest design that seeks greater ease-of-use in terms of easier focus adjustment and improved grip on the binoculars body

◆Attachable to a tripod using the optional Tripod Adapter TP-3

PENTAX binoculars have been in the world since 1938. Experience the clarity made possible by trusted optical performance and revolutionary coating techniques

How Far Can I See With These Binoculars?

How far can I see with my binoculars? This is a very common question and If we’re being honest, this is actually a question that doesn’t really make sense when we are talking about binocular magnification. To explain: A binocular’s main goal is to magnify whatever you’re looking at, such as the moon, which is approximately 240,000 miles away. If you want to see even further than that, you can look at the sun which is 93 million miles away (not recommended unless you want to burn out the retina in your eyes!). So, it’s not really a question of how far can binoculars see, but how much you want to magnify the object you’re seeking to bring closer.

What Does Magnification Mean?

Magnification is how much larger an object appears when viewed through a binocular compared to how large the same object would appear when viewed with the naked eye from the same distance.

For example, if you are trying to decide between an 8x or 10x, an animal or person will appear ten times larger through the 10x binocular than with your normal eyesight. Or eight times larger with the 8x and so on.

Let’s simplify it even more. You’re standing at the edge of a 100-yard clearing. You’re looking at a tree line at the opposite end of the clearing. With a 10x power binocular, the trees will appear as if you’re only 10 yards versus what the tree line would look like with your unaided eye. Basically teleporting you 90 yards closer for a more detailed look.

What kind of vision does binoculars give you?

Binoculars do not simply give you a magnified view of objects – they also deliver a brighter and more detailed image. The large objective lenses collect more light than the naked eye, letting you see a larger collection of stars and nebulae in the night sky, and finer details in wild birds and flowers.
Another great visual attribute of binoculars is the stereoscopic field of view. By using both eyes, you can watch objects while maintaining the sense of depth. As a result, you can enjoy viewing a distant subject such as an actor on stage as if they were close by, with a realistic three-dimensional feel.

Read more & view the range here

About Pentax Binoculars – Click here!

Pentax Jupiter 8×40 Specs

Prism Type Porro
Magnification 8x
Objective Lens Diameter 40 mm
Angle of View 8.2° (Actual)
Field of View 429′ @ 1000 yd / 142.4 m @ 1000 m
Minimum Focus Distance 19.7′ / 6 m
Exit Pupil Diameter 5 mm
Eye Relief 13 mm
Diopter Adjustment None
Focus Type Center
Dimensions 7.4 x 5.2 x 2.3″ / 18.8 x 13.2 x 5.8 cm
Weight 25.9 oz / 734 g
Packaging Info
Package Weight 2.19 lb
Box Dimensions (LxWxH) 8.8 x 6.6 x 3.2″

Additional Information

Weight 1 kg
Dimensions 210 × 80 × 85 mm


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