The 6 Best Zoom Binoculars

Updated December 20, 2017 by Brett Dvoretz

6 Best Zoom Binoculars
Best High-End
Best Mid-Range
Best Inexpensive
Whether you fancy yourself an amateur ornithologist or a budding astronomer, the zoom binoculars on our list will bring the images of distant animals and celestial objects much closer. By operating within a defined range, each pair allows you to fine-tune your field of view to keep you from having to move in on a subject. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best zoom binocular on Amazon.

6. Olympus Tracker Porro

With a wide 10-30x zoom range, the Olympus Tracker Porro offer a good combination of power and portability, even if their 25mm objective struggles in low light. Their BaK-4 prisms boast a high enough refractive index to result in an impressive level of clarity.
  • central dioptric adjustment
  • weigh less than a pound
  • plastic eye relief
Brand Olympus
Model 118704
Weight 14.9 ounces
Rating 4.0 / 5.0

5. Bushnell Powerview 7-15x25mm

The compact, yet competent, Bushnell Powerview 7-15x25mm are perfect for use at the theater or at a sporting event, especially if the venue in question has a policy forbidding their use, as these are small enough to hide deep within a bag.
  • nonslip rubber armoring
  • fully coated optics
  • hard to focus in deeper zooms
Brand Bushnell
Model 139755
Weight 1.1 pounds
Rating 4.7 / 5.0

4. Nikon Compact Aculon

The Nikon Compact Aculon make it remarkably easy to switch among their four magnification stops of 8, 12, 16, and 24x. Their 25mm objectives aren't the best for low-light applications, but the images in brighter situations are impeccably clear.
  • smooth central focus knob
  • high-index prisms
  • anti-reflective optics
Brand Nikon
Model 7335
Weight 16 ounces
Rating 4.4 / 5.0

3. Bushnell Legacy WP Porro

The multi-coated elements and BaK-4 prisms that refine the image coming into the Bushnell Legacy WP Porro combine with a 50mm objective for excellent low-light performance within a 10-22x zoom range. Rubberized armor provides durability and grip.
  • water- and fog-proof
  • twist-up eyecups
  • lifetime warranty
Brand Bushnell
Model Legacy WP Parent
Weight 2.9 pounds
Rating 4.7 / 5.0

2. Olympus Trooper 8-16x40 DPS

The Olympus Trooper 8-16x40 DPS have a wide enough light gathering area to be effective in relatively dim situations, and their zoom capability is ideal for near- to mid-range viewing targets like performers at a concert or less skittish wildlife.
  • 10-meter close focus distance
  • 10-12mm eye relief
  • camera-quality optics
Brand Olympus
Model pending
Weight pending
Rating 4.7 / 5.0

1. Nikon 8252 Aculon A211

Few producers in the world have as many years refining high-quality optics as the makers of the Nikon 8252 Aculon A211. Their 50mm multi-coated Eco-Glass lenses are bright and sharp in the vast majority of situations, all the way through their 10-22x range.
  • fingertip zoom control
  • turn-and-slide eyecups
  • durable armored coating
Brand Nikon
Model 8252
Weight 3.2 pounds
Rating 4.9 / 5.0

Choosing The Best Zoom Binoculars

Zoom binoculars vary greatly, and understanding the differences between their features can help to ensure you choose the best model. The first thing to be aware of is magnification numbers. Higher magnifications are best for looking at objects that are extremely far away. Another consideration is objective lens optics. Bigger objective lenses mean more light and a brighter image, so they are better for low-light situations. They also make for heavier binoculars. This is why many bird watchers and hikers choose smaller objective lenses to save on weight. In well-lit situations, such as sporting events or concerts, a smaller objective lens size shouldn't be an issue, so it may also be more ideal to have a compact model with a very small objective lens.

Some models are equipped with a rubberized shell meant to take a beating and still operate. This additional armor may increase the size, weight, and price. Users who need a simple pair of binoculars to use from the safety of their stadium seat may favor a lighter, unprotected model.

Depending on your uses, you may require a pair of waterproof binoculars. This is especially important if you intend to use them in high humidity environments or in an environment where rain is frequent, as water can easily damage standard binoculars.

Field of view is another factor for many users. Just as with normal vision, a wider field of view is more desirable for people who need to follow something moving across their viewing area. This could be a ball at a sporting event or quick moving wildlife. For people who usually view stationary objects, a wide field of view is not as important.

History Of Zoom Binoculars

Modern zoom binoculars are a pair of powerful telescope lenses adjusted to be used with both eyes. As such, the history of binoculars actually goes all the way back to the first telescope. A man from Holland named Hans Lippershey is credited with the invention of the telescope somewhere near the beginning of the 17th century. He was not the first to make telescopes, but he was the first to make them well known. Early telescopes consisted of one convex lens and one concave lens fixed at opposite ends of a tube. This allowed for objects to be magnified three to four times. Lippershey put two of these tubes together to make a very rough version of binoculars, but they were difficult to use correctly and fell by the wayside.

The telescope was a bit of a novelty when it was first introduced, but soon many fields realized its benefit. The Italian mastermind Galileo Galilei improved upon the design and used his perspective tube to study celestial bodies. With his telescope, Galileo was the first man in modern history to see the craters of the moon, the four largest moons of Jupiter, and even the rings of Saturn. Almost a hundred years later, Sir Isaac Newton revolutionized the telescope by adding a simple mirror. This reflector telescope would open the door to modern telescopes, magnifying glasses, and even binoculars.

Around this same time, Johann Zahn made the first handheld binoculars that had an adjustable link between the two telescopes. This was still a very rough approximation of true binoculars. Old lenses were made of glass, which provided blurry images and low magnification. J.P. Lemiere invented the first true binocular telescope in 1825. It was used by the U.S. Navy in the Civil War, but was replaced as the most defining invention in binoculars, the Porro prism, was developed in the 1850s. The Porro prism paved the way for all modern binoculars, and is still used to this day. Modern binoculars continue to improve on the original designs, though the concept of two telescopes being mounted together to be used with both eyes is well over 400 years old.

Understanding Lenses And Prisms On Zoom Binoculars

Lenses and prisms on zoom binoculars can seem complex, but they are simple to understand with a bit of guidance. The markings on a binocular will determine the magnification and aperture of the lens. If a binocular is marked 10 x 50, it will have a magnification power of 10. This means objects will appear ten times closer than they actually are. It is more difficult to keep the field of view steady with higher magnification numbers, as they also amplify the movements of the user’s hands, making for a shaky field of view. Binoculars above a 10 magnification are usually used with a tripod or stand. The difference with zoom binoculars is that they provide the user with a range of magnification options. This eliminates the need for multiple sets of binoculars depending on what the user is viewing. Many models can comfortably switch from seven or eight times magnification all the way up to fifteen or sixteen times.

This same pair of binoculars will have a 50 millimeter objective lens. The purpose of the diameter of the objective lens is to absorb light and reflect it to the eye. Larger lenses will provide a brighter image, where smaller lenses will rely more on the light levels of the environment.

Zoom binoculars also employ either Porro prisms or roof prisms. Prisms in lenses disperse light, flipping and mirroring images so they appear upright in the lens. Porro prisms create the typical offest look of classic binoculars. They are slightly less durable and compact than other prism types. Reverse Porro prisms improve the profile of binoculars and make them more compact.

Roof prisms are gaining popularity in the lens industry, as they relay an image, without affecting the profile of the binoculars. Advancements in prism design have made roof prisms extremely accessible, creating a high optical quality without compromising on price or size. The highest quality optical glass is now regularly used to create a clear, highly resolved image in the lens. Lenses are commonly marked extra-low dispersion, high definition, or alpha-class to denote that their glass creates crisp images and reduces color fringing.

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Last updated on December 20, 2017 by Brett Dvoretz

A wandering writer who spends as much time on the road as behind the computer screen, Brett can either be found hacking furiously away at the keyboard or perhaps enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He hopes to one day become a modern day renaissance man.

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