10 Best Porro Prism Binoculars Worth The Money (2021)

The fact is that Porro prisms provide better image quality at a lower cost, but they also tend to be somewhat bulkier.

The best Porro prism binoculars come with a high-density BAK-4 glass, provide a more three-dimensional image with greater depth perception and a wider field of view than roof prisms.

Here are our favorite options that won’t let you down.

We Recommend

Best auto-focus

Steiner Predator AF

Best that money can get

Steiner Military-Marine

Best zoom porros

Nikon Aculon A211

Best Porro Prism Binoculars

1. Steiner Predator AF 10X42mm Porro Prism Binoculars:

steiner binocular

This binocular uses advanced Color Adjusted Transmission (CAT) technology. Through this, you get to see your game in bright, brilliant colors with zero blurriness. 

To keep your eyes safe from dust and debris, the Steiner Predator features silicone eyecups. And you won’t lose your grip even if they get wet due to the textured grip. 

The Steiner Predator has a rugged Makrolon chassis that keeps your vision safe from fogging and can survive rain and dust damage. 

The Steiner Predator is built for long-distance shooting and game spotting. You can spot camouflaged prey in foliage with this binocular. The open-bridge construction allows you to hold it for hours without tiring your hands.

However, you don’t get a manual focus option. You don’t get any image stabilization either.


What we liked

  • Good for long-distance hunting
  • Brilliant and bright colors
  • Best Porro prism binoculars for birding 
  • Easy to grip even when wet
  • Comfortable grip
  • Strong rugged body
  • Withstand rain and dust

What we didn’t like

  • Low water resistance rating (IPX-4)  
  • No image stabilization

Magnification: 10 x
Lens diameter: 42 mm
Field of view: 381 yds. at 1000 ft
Eye relief: 16.8 mm
Weatherproof: Waterproof, Fog proof
Weight: 30.3 oz
Best for: Sport hunting, bird watching

2. Steiner MM1050 10X50 Military-Marine Binoculars:

tactical binoculars

The Steiner 10×50 is a military-grade pair of binoculars that’s optimal for low-light applications due to the use of BAK 4 Porro prisms. It features a strong and rugged Makrolon housing that can withstand water and sun damage. This housing is covered by an NBR long-lasting rubber armoring. It allows the binoculars to withstand up to 11Gs of damage. 

This pair is equipped with the Sports-Auto Focus technology. Through this, each eyepiece can be independently focused, with the minimum range being 20 yards. 

The Steiner 10×50 has a large objective lens that transmits extra light than your ordinary lenses. This makes hunting in the dark a breeze. 

However, much like similar models, it doesn’t feature image stabilization.


What we liked

  • Marine-grade housing
  • Withstands dust and water damage
  • Resists 11Gs of impact
  • Excellent low-light performance
  • Good for hunting in the dark
  • Auto-focus for flexibility
  • Lightweight and portable

What we didn’t like

  • Higher price tag

Magnification: 10 x
Lens diameter: 50 mm
Field of view: 327 ft. at 1000 yds
Eye relief: 17 mm
Weatherproof: Waterproof, Fog proof
Weight: 35.2 oz
Best for: Birdwatching, boating, wayfinding

3. Nikon Aculon A211 10-22X50mm Porro Prism Binoculars:

nikon binoculars

Nikon’s Aculon A211 features a 10-22x magnification power packed into a 50 mm wide lens. This optimizes it for birdwatching, sightseeing, observing, and wayfinding. The rubber armor coating makes it shock-resistance and provides a firm and comfortable grip.

The objective lens has been fully multi-coated. This enhances the brightness, resulting in clarity even in your peripheral vision. Moreover, this set features rubber eyecups that provide comfort as well as easy adjustments. Although it’s a bit heavy (48.91 oz), but you can opt for a tripod adaptor for stargazing.

Like most other Porros, this one too features a Center Focus for more focus control. Unfortunately, this isn’t a good choice for close-range use. It has a minimum focus range of 49.2 feet. 

However, it makes up for that with its small exit pupil, adjustable from 2.5 to 5 mm. This tends to darken the image.


What we liked

  • Highly versatile
  • Rubber armor coating for shock resistance
  • Enhances brightness
  • Comfortable and adjustable eyecups
  • More focus controls
  • Great for long-range hunting and watching
  • Good for low-light applications

What we didn’t like

  • Power adjustment knob is stiff
  • Short eye relief
  • Eye piece protector cover don’t fit snug

Magnification: 10 – 22 x
Lens diameter: 50 mm
Field of view: 199 ft. at 1000 yds
Eye relief: 8.6 mm
Weatherproof: Waterproof, Fog proof
Weight: 48.91 oz.
Best for: Birdwatching, sightseeing, wayfinding, boating, observing

4. Celestron SkyMaster DX 8X56mm Porro Prism Binoculars

porro prism binoculars

The Celestron SkyMaster is the best choice in our Porro prism binoculars review for astronomy and sightseeing. Celestron has nitrogen-purged it for maximum protection against fog and moisture. 

Its lenses are completely Multi-Coated for sharp, bright colors that don’t fade away. The Celestron SkyMaster also features a rugged design. This maximizes the brightness of the image and allows for clearer night vision. 

This Porro binocular focuses a lot on user comfort. It features silicone eyecups to keep your eye sockets comfortable and dust-free. 

Moreover, this pair of binoculars has a protective rubber coating that maintains a smooth and stable grip. 

The Celestron SkyMaster has a large focus knob in the center for manual focusing. However, they can only magnify up to 8 times.


What we liked

  • Sharp bright images
  • Comfortable eye relief
  • Eyecup angle can be adjusted
  • Gives you more focus control
  • Great for stargazing
  • Protected against water and fog
  • Comfortable rubber grip

What we didn’t like

  • Somewhat heavier weight

Magnification: 8 x
Lens diameter: 56 mm
Field of view: 304 ft. at 1000 yds
Eye relief: 18 mm
Weatherproof: Waterproof and fog proof
Weight: 35.04 oz
Best for: Astronomy

5. Nikon OceanPro 7X50 Porro Prism Binoculars

porro prism binoculars

The OceanPro are BAK4 Nikon Porro prism binoculars made for wayfinding in the ocean. The polycarbonate body makes them 100% fog and waterproof. They have a long eye relief (22.7 mm) for glasses-wearers to comfortably use this binocular. 

Both the BaK4 prisms and the fully Multi-Coated lenses account for a bright and distinct image. The binoculars are rubber-armored for maximum protection and comfort. 

Since they’re made for wayfinding and boating, they have a wide close-focus of 33 feet. They also weigh a lot, approximately 56.79 oz.

They also have a wider exit pupil of about 7.1 mm. This enhances the brightness of the image and allows for a wider FoV of up to 378 feet at 1,000 yards. 

Unfortunately, it’s not useful in the dark. But it’s excellent for boating in the day. It has a low magnification power of 7x.


What we liked

  • 100% waterproof and fog proof
  • Bright and distinct image
  • Can see far and wide
  • Has a wider field of view
  • Extremely bright images
  • Manual focus
  • Good for glasses-wearers

What we didn’t like

  • Somewhat Large to hold
  • Quite heavy

Magnification: 7 x
Lens diameter: 50 mm
Field of view: 378 ft. at 1000 yds
Eye relief: 22.7 mm
Weatherproof: Waterproof, Fog proof
Weight: 56.79 oz
Best for: Boating, wayfinding

6. Leupold BX-1 Yosemite 10X30mm Porro Prism Binoculars

leupold binoculars

The Leupold BX-1 has a 10x magnification with a narrow interpupillary distance. Both of these features combine to provide wide viewing ranges. 

The Leupold BX-1 features water and fog-proof construction that keeps your binoculars safe from the elements. These binoculars feature a fully Multi-Coated lens array. This provides bright and brilliant colors along with an ample level of brightness. Additionally, it has a narrow exit pupil of 3mm, making it ideal for use in low-light conditions. 

Speaking of focus, the Leupold BX-1 features a center focus that can be manually adjusted. This gives you more control, but it can take some time to focus. There’s also a Diopter Focus that accommodates parallax and visual errors.


What we liked

  • Protected from fog and water
  • Great for low-light applications
  • More focus control
  • Compensates for parallax
  • Comes with accessories
  • Wide viewing range and short close-focus
  • Bright and brilliant colors

What we didn’t like

  • Not suitable for stargazing
  • Short eye relief

Magnification: 10x
Lens diameter: 30 mm
Field of view: 351 ft. at 1000 yds
Eye relief: 15.5 mm
Weatherproof: Waterproof, Fog proof
Weight: 17 oz
Best for: Birding and all-around wildlife

7. Bushnell Legacy WP 10-22X50mm Porro Prism Binoculars

porro prism binoculars

The Bushnell Legacy WP Porro prism binos come with a max magnification of up to 22 times. This makes it perfect for all applications such as wayfinding, sightseeing, stargazing, and hunting. 

The objective lens is Fully Multi-Coated to keep your vision sharp and clear. Dust and micro-abrasions won’t get the best of it. It has a wide field of view of 199 feet at 1,000 yards. 

The eyecups can be folded up/down for glass-wearers. The Bushnell Porro prism binoculars also feature manual focus that gives you more control over where you want to focus. 

The entire body is made to be 100% waterproof with rugged rubber armoring for a better grip. This Porro binocular has a small exit pupil of 5.0 mm and BaK-4 prisms, optimizing it for low-light applications. 

However, they don’t come with any accessories. They’re also a bit heavy to use on the go, weighing 34.2 oz.


What we liked

  • Foldable eye cups for glass-wearers
  • Comfortable rubber grip
  • 100% water and dustproof
  • Center manual focus
  • Bright and sharp images
  • Great for low-light applications
  • Versatile usage

What we didn’t like

  • Somewhat heavy
  • Short eye relief

Magnification: 10 x – 22x
Lens diameter: 50 mm
Field of view: 314 ft. at 1000 yds
Eye relief: 14 mm
Weatherproof: Waterproof, Fog proof
Weight: 34.2 oz
Best for: wayfinding, stargazing, sightseeing, hunting

8. Leupold BX-1 Rogue 8X25mm Compact Binocular

leupold binoculars

The Leupold BX-1 are compact Porro prism binoculars made with great precision and accuracy. It has been nitrogen-purged for protection against fog and water.

There’s a central focus dial that facilitates manual focusing. This way, you have a lot more control over how far you’re seeing. You also get a Diopter focus to eliminate parallax.  

The Leupold BX-1 Rogue has an ergonomic lightweight design that weighs 12.64 ounces. This makes it easier to hold and use on the go. The silicone-padded eyecups can be twisted up for convenient storage. And the eye relief is perfect for those who wear glasses. 

The objective lens is Fully Multi-Coated to maintain a decent level of brightness that provides clarity and contrast. It comes with a few accessories, such as a carrying case and shoulder strap, to complete your experience.


What we liked

  • Lightweight and extremely portable
  • Center and Diopter focus
  • Comes with lots of accessories
  • Great contrast and clarity
  • Ergonomic design
  • Comfortable eyecups
  • Long eye relief for glasses users

What we didn’t like

  • Strap bracket is short
  • Short eye relief

Magnification: 8x
Lens diameter: 25 mm
Field of view: 337 ft. at 1000 yds.
Eye relief: 15 mm
Weatherproof: Waterproof, Fog proof
Weight: 12.64 oz
Best for: Sports events, general-purpose

9. Celestron SkyMaster 25X100mm Porro Prism Binoculars

porro prism binoculars

The Celestron SkyMaster is the best Porro binoculars for stargazing and sky-watching with 25x optical magnification that will bring you closer to the stars. 

It’s made using a BaK4 Porro prism system that can focus on objects over long ranges, even in dark light conditions. It has a tiny exit pupil of 4 mm, perfect for getting crisp images of constellations. 

It features a Center focus that allows for manual focusing and a Diopter focus for eliminating parallax. These binoculars are 100% waterproof, so you can use them in the rain. They’re not fog proof though. 

They have a large objective lens diameter of 100 mm for gathering as many visuals as possible. And since they’re astronomical binoculars, they have a longer close-focus, of 70 feet. 

These binoculars do not have an Auto Focus feature. So beginners may struggle with them.


What we liked

  • Ideal for astronomy
  • Diopter and Center focus
  • 100% waterproof
  • Large lens diameter
  • Made for spotting constellations
  • Perfect crisp images
  • Longer close-focus range

What we didn’t like

  • Short eye relief
  • Requires a tripod

Magnification: 25x
Lens diameter: 100 mm
Field of view: 157 ft. at 1000 yds
Eye relief: 15 mm
Weatherproof: Waterproof, Fog proof
Weight: 140 oz
Best for: Astronomy, stargazing

10. Vortex Vanquish 10X26mm Porro Prism Compact Binoculars

vortex binoculars

Designed for birdwatching, the Vortex Porro prism binoculars are compact and lightweight. They have a 10x magnification power that maintains crisp image quality even at 1,000 yards. This set has a short close-focus of 7.6 feet, meaning you can use it for birdwatching and sightseeing with ease.

Focusing can be done via the center dial focus. There’s also a limited diopter focus for eliminating parallax. The objective lens is quite small, letting in a lesser light. The lens is Fully Multi-Coated, so it does enhance the brightness to some extent. 

The exit pupil is also very small, at just 2.6 mm. This allows for better focusing, but it reduces exposure. They’ve been nitrogen-filled and rubber-armored for maximum fog and rain protection.


What we liked

  • Crisp image quality
  • Great for low-light applications
  • Highly durable
  • Protected against water and fog
  • Diamond-pattern grip
  • Center and Diopter focus
  • Great for close-range hunting

What we didn’t like

  • Weaker Diopter focus

Magnification: 10 x
Lens diameter: 26 mm
Field of view: 294 ft. at 1000 yds
Eye relief: 16 mm
Weatherproof: Waterproof, Fog proof
Weight: 12.8 oz
Best for: Birdwatching, general observing

Roof Prism vs. Porro Prism Binoculars

Binoculars work on two main principles: magnification and image re-orientation. A simple magnifying lens (the objective lens) magnifies the image, and a prism orients it the right way up. A roof prism binocular has two prisms stuck together such that the light passes through in a straight line. In a Porro prism, however, the prisms are slightly offset, bending the light slightly. 

Porro prisms (Porro meaning the name of its inventor), while they may seem bulky and weighty, provide better image quality. They enhance the image better and provide a wider field of view. This may not be necessary for you if you’re just finding your way across the sea or observing. 

But for birdwatchers and stargazers, catching even the tiniest glimpses is extremely crucial. Porro binoculars are highly recommended for their wider field of view, which makes hunting a breeze. 

Roof prism binoculars have less clarity, but they’re compact. So if the size is a problem for you, then go for roof prism binoculars. They’re also better at waterproofing.

Porro binoculars are good for everything except long-range spotting. But roof prism binoculars are only good for long-range spotting and daytime hunting. Otherwise, the image clarity just isn’t worth it. 

One thing to consider is that, despite their modernity, Porro prism binoculars are cheaper than roof prism binoculars. 

FAQ

What is a Porro prism binocular?

A Porro prism binocular is one in which the two prisms are slightly offset to each other. This results in a wider field of view. These binoculars are great for hunting and short-range birding.

Which is better: roof prism or Porro prism?

Making the Porro vs roof comparison is quite hard. Porro prism has a jog in the light path, whereas the light goes straight through in the Roof prism.

Roof prisms cost more to make. Porro prisms are better at light transmission and show better contrast. They are good for almost everything except long-range spotting. They’re not as durable as roof prisms. 

How do Porro prisms work?

Porro prisms work by first magnifying the image and then inverting it using two prisms. The prisms are offset, so the light ray has to make a short horizontal movement. This makes the image wider and opens up your field of view.



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