Pentax SP 20x60 WP Binoculars Review: Worth It? (November 2026)
The Pentax SP 20x60 WP binoculars suit supported long-distance observing, especially when you want 20x magnification, 60 mm objectives and waterproof construction. Their 3.1 lb weight and narrow 2.2-degree apparent angle make a stable support important.
On this page (10 sections)
- Pentax SP 20x60 WP binoculars review at a glance
- What do 20x and 60 mm mean in daily use?
- Do the Pentax binoculars need a tripod?
- How wide is the view?
- How does the Pentax compare with lighter 20x binoculars?
- How does it compare with 7x50 binoculars?
- Are the Pentax SP 20x60 WP suitable for Moon viewing?
- What are the main Pentax SP 20x60 WP trade-offs?
- How should you use and care for high-power binoculars?
- Is the Pentax SP 20x60 WP worth choosing?
The Pentax SP 20x60 WP binoculars are a strong choice for supported long-distance observing. Their 20x magnification, 60 mm objective lenses, multi-layer coatings and waterproof nitrogen-filled body are well suited to astronomy, distant landscapes and stationary wildlife.
That combination suits an observer who plans around a tripod from the start. You get a closer view of lunar detail and distant features, with front lenses large enough to support low-light use on clear nights.
The main trade-off is handling. At 3.1 lb, these binoculars are better matched with a tripod than with extended handheld use, and their 2.2-degree apparent angle gives you less sky or landscape in view than a lower-power pair.
Weight matters more at 20x because shake is magnified along with the subject. Even a short handheld session can tire your arms and make fine detail harder to follow.
The waterproof construction is a practical plus for outdoor use. It helps when dew, light rain or damp evening air are part of your usual observing routine.
Manual center focus gives you direct control over sharpness. You will need to adjust it for each change in target distance, which is a small price for the higher power.
Eye relief of 21 mm is generous enough for comfortable viewing with the eyecups positioned correctly. That helps when you are settled on a tripod and taking your time with a fixed target.
The rigid body is designed to help maintain optical alignment over time. That matters for a binocular you may carry to a dark site, set up, and use repeatedly.
Think about where you will observe before you choose this model. A backyard, balcony or fixed field position makes the most of its strengths.
If you hike long distances or prefer relaxed handheld scanning, a lower-power pair may fit your habits better. The Pentax rewards patience, support and a clear plan for what you want to look at first.
Pentax SP 20x60 WP binoculars review at a glance
The Pentax SP 20x60 WP is best when detail and low-light capability matter more than portability. Large objective lenses provide light-gathering capability, while multi-layer coatings support light transmission through the binocular.
The rigid body is designed to help maintain optical alignment. Waterproof and nitrogen-filled construction adds protection for wet observing conditions, with JIS Class 6 protection and submersion to 1 meter.
Pentax SP 20x60 WP Binoculars: Best for supported long-distance observing
- 20x magnification
- 60 mm objective lenses
- Waterproof and nitrogen-filled
- 3.1 lb weight
- Manual center focus
A high-magnification binocular with large objectives, multi-layer coatings and waterproof construction. Its weight and narrow view favor tripod-supported observing.
Pros
- 20x magnification
- 60 mm objectives
- Waterproof and nitrogen-filled
- 21 mm eye relief
- Rigid body construction
Cons
- Heavy at 3.1 lb
- Narrow 2.2-degree apparent angle
- Manual focus requires adjustment
The binoculars use manual center focus with a diopter adjustment range of plus or minus 3 diopters. Eye relief is 21 mm, the exit pupil diameter is 3 mm and the field of view is 38.4 ft.
Who should choose the Pentax SP 20x60 WP?
Choose the Pentax if you want 20x magnification with 60 mm objectives and already have a stable support plan. It fits observers who study the Moon, distant scenery or stationary subjects where a narrow view is acceptable.
Choose another design if you mainly scan large areas, follow moving birds or carry binoculars for long walks. Lower magnification is usually easier to hold and gives a wider view.
What do 20x and 60 mm mean in daily use?
The 20x rating means distant subjects appear much closer than they would through the naked eye. That can help reveal detail on the Moon or distant landforms, but every hand movement also appears larger.
The 60 mm objective measurement refers to the diameter of the front lenses. Larger objectives can gather more light, which is useful for low-light observing, but they also add size and weight.
For comparison, what does 15x70 binoculars mean explains how magnification and objective size work together. The same basic rule applies here: more magnification can reveal detail, while larger objectives can support brighter views in suitable conditions.
The Pentax has a 3 mm exit pupil. Exit pupil is the small circle of light you see when you hold the binoculars a short distance from your eyes.
A 3 mm exit pupil balances high magnification with a manageable optical design.
Do the Pentax binoculars need a tripod?
The Pentax SP 20x60 WP should use a tripod for the steadiest view. Its 3.1 lb weight and 20x magnification make handheld viewing tiring and increase visible shake.
A tripod also helps when you need to keep a target centered for more than a few seconds. This matters for lunar observing, distant wildlife and fixed landscape targets.
A suitable support should hold the binoculars securely and let you adjust height without forcing the eyepieces away from your eyes. Check the binocular and tripod connection before lifting the setup.
Our guide to the best tripod mounted binoculars covers the support question in more detail. If you want to observe without a tripod, a lower-power binocular may be the more practical choice.
How wide is the view?
The Pentax has a 38.4 ft field of view and a 2.2-degree apparent angle of view. This is a focused, narrow presentation compared with wide-angle binoculars.
That width is measured at a set distance, so it helps to picture a patch of view rather than a sweeping panorama. At 20x, you see a small section of sky or landscape in greater detail.
A narrow field can work well when you already know where the target is. It is less convenient when sweeping across the sky or finding a fast-moving bird.
The trade-off is familiar with high magnification. You gain detail on a chosen subject, but you lose the easy context that a wider view provides.
Before observing, locate the target with your unaided eyes or a lower-power instrument. Then bring the Pentax to your eyes and make small focus adjustments.
That order matters because the narrow field gives you little room for error. Finding a target by eye first, then centering it with a wider view, saves time once the Pentax is on the tripod.
The 20x power can also make target acquisition slower. Start with the binoculars pointed at a nearby reference area, then move gradually toward the subject instead of making large corrections.
Small movements on the tripod head are enough at this magnification. A large swing can carry the target right out of view.
For the Moon, this narrow field still works because the lunar disc is a defined target. Once centered, you can study features along the terminator without needing a wide sweep.
For birds or aircraft, the same narrow view is less forgiving. A moving subject can cross the field quickly, and following it requires smooth, steady tracking.
Center focus and the diopter adjustment help you settle the image once the target is placed. Take your time here, since a slightly soft image wastes the benefit of 20x.
Keep expectations matched to the field of view. This is a binocular for examining a known target, not for searching a large area from scratch.
How does the Pentax compare with lighter 20x binoculars?
The Pentax offers larger 60 mm objectives, while the FLYANT uses 50 mm objectives and weighs 0.89 kg. Both offer 20x magnification, so the choice comes down to light-gathering potential, handling and the stated construction.
FLYANT 20x50 High Powered Binoculars for Adults: Best for portable 20x viewing
- 20x magnification
- 50 mm objectives
- 26 mm eye relief
- Waterproof rubber-coated body
- Tripod mount
A portable 20x option with a rubber-coated body, center focus and tripod mount. The 50 mm objectives make it a lighter alternative to the Pentax.
Pros
- 20x magnification
- Tripod mount
- 26 mm eye relief
- Center focus
- Portable design
Cons
- 50 mm objectives gather less light than the Pentax
- Do not immerse in water
- Manual focus
The FLYANT has a 26 mm eye relief figure, center focus and a tripod mount. Its rubber-coated body is described as waterproof for daily use, but it should not be immersed in water.
The Pentax is the better fit if the 60 mm objectives, JIS Class 6 waterproof and nitrogen-filled construction, and rigid body are your priorities. The FLYANT may suit you better if lower weight and a stated tripod mount matter more.
For a broader buying framework, read what binoculars to buy before choosing between high magnification, larger objectives and portability.
How does it compare with 7x50 binoculars?
The Steiner Marine binoculars are a wide-view alternative, not a direct high-magnification competitor. They use 7x magnification, 50 mm objectives and a 7.2-degree field of view.
Steiner Marine Binoculars for Adults and Kids: Best for wide, steady outdoor views
- 7x magnification
- 50 mm objectives
- 356 ft field of view at 1000 yd
- Sports Auto Focus
- Waterproof rubber-armored body
A lower-power binocular for wide views, outdoor activity and marine use. Its 7x magnification is easier to hold than either 20x option.
Pros
- Wide 7.2-degree field of view
- Sports Auto Focus
- Waterproof construction
- 50 mm objectives
- 20 mm eye relief
Cons
- Not a high-magnification astronomy choice
- Heavier than compact binoculars
- Fixed 7x magnification
Steiner’s Sports Auto Focus is designed to keep views sharp from 20 yd to infinity after calibration to the user’s eyes. That can be useful outdoors when you move between distant subjects and do not want to keep turning a center focus wheel.
The Steiner also has a waterproof rubber-armored body, 20 mm eye relief and a 7.14 mm exit pupil. Its lower 7x power is easier to hold steady, while its broad view is better for scanning.
Pick the Steiner for boating, wildlife sightseeing, sports or general outdoor use. Pick the Pentax when your priority is high magnification for supported, distant observing.
Are the Pentax SP 20x60 WP suitable for Moon viewing?
The Pentax is well matched to Moon viewing when mounted securely. The 20x magnification can bring lunar features closer, while the 60 mm objectives support low-light observation.
Start with a stable tripod and a clear line of sight. Focus on the Moon slowly, then adjust the diopter so each eye contributes a sharp image.
The narrow field means the Moon may move out of view faster than it would through lower-power binoculars. Re-center the binoculars gently rather than pushing the support.
For more options, compare the best binoculars for viewing the Moon. That comparison can help if you want a wider field or a lighter setup.
What are the main Pentax SP 20x60 WP trade-offs?
The strongest benefit is the combination of 20x magnification, 60 mm objectives and weather protection. The main costs are weight, narrow viewing angle and the need for careful support.
The binoculars weigh 3.1 lb and measure 8.8 in long by 7.7 in wide and 3.35 in high. Plan storage and transport around those dimensions instead of treating them like compact travel binoculars.
The enclosure material is rubber, and the color is black. A case is included as built-in media, which helps with storage between observing sessions.
The binoculars use manual focus. That gives you direct control, but you must focus the instrument yourself for different targets and distances.
The protective coating described for the SP line repels dust, water and grease to help keep the optics clean. Use a proper lens-cleaning method and avoid rubbing dry grit across the glass.
How should you use and care for high-power binoculars?
Set the binoculars on their support before making fine focus adjustments. Keep the barrels aligned with your eyes, then adjust the center focus and diopter until the image appears as one sharp view.
Use the tripod for long sessions, especially at 20x. A stable position reduces shake and lets you notice fine detail instead of constantly correcting the aim.
Keep the objective lenses capped when the binoculars are stored. If the exterior becomes wet, dry it before placing the binoculars in their case.
Waterproof construction helps protect against wet conditions, but it is not a reason to leave optics exposed to unnecessary moisture. Follow the care instructions that come with the binoculars.
Avoid touching the optical surfaces with your fingers. Dust, water spots and grease reduce contrast, so clean only when needed with suitable lens-care materials.
Is the Pentax SP 20x60 WP worth choosing?
The Pentax SP 20x60 WP is worth choosing if you want high magnification, large objectives and waterproof construction in one binocular. It is especially suited to tripod-supported Moon viewing, distant landscapes and stationary long-distance targets.
Choose the FLYANT if you want 20x magnification with a lighter 50 mm design and a stated tripod mount. Choose the Steiner if you value a wide 7.2-degree view, 7x power and Sports Auto Focus for general outdoor use.
For astronomy buyers comparing nearby specifications, the best 15x70 binoculars for astronomy guide is a useful next step. The decision rule is simple: choose the Pentax for supported detail, the FLYANT for lighter 20x viewing or the Steiner for steadier wide-field observing.
How we scored the Pentax SP 20x60 WP
Our score weighs specs, features and buyer feedback against the needs of this search. The Pentax scores 9.4 because its 20x magnification, 60 mm objectives, multi-layer coatings, rigid body and JIS Class 6 waterproof construction fit supported long-distance observing well.
The score does not remove the handling trade-offs. A 3.1 lb binocular with a 2.2-degree apparent angle needs a steadier setup than a lower-power outdoor binocular.
For a related Pentax option with lower magnification, see the Pentax SP 10x50 WP binoculars review. You can also compare a different astronomy binocular design in the SVBONY SV206 review.
Frequently asked questions
Is the Pentax SP 20x60 WP good for astronomy?
The Pentax SP 20x60 WP suits astronomy when you can use a tripod or another stable support. Its 20x magnification can show more detail than lower-power binoculars, while the 60 mm objective lenses support low-light viewing.
The 3.1 lb weight makes handheld observing difficult for long sessions.
What does 20x60 mean on binoculars?
20x60 means the binoculars provide 20x magnification and use 60 mm objective lenses. The magnification brings distant subjects closer, while the larger front lenses admit more light.
That combination helps long-distance and low-light viewing, but it also increases the need for steady support.
Can you use Pentax SP 20x60 WP binoculars in rain?
The Pentax SP 20x60 WP binoculars are waterproof and nitrogen-filled to JIS Class 6, with submersion listed to 1 meter. Dry the exterior after wet use, keep the optics clean with suitable materials and follow Pentax care guidance.
Waterproof construction does not remove the need for careful handling.
Are 20x binoculars better than 15x binoculars?
20x binoculars can show more detail on distant targets, but they are harder to hold steady and usually offer a narrower view. A 15x model may be easier for tracking moving subjects or scanning the sky.
Compare the magnification with your support, target distance and preferred observing style.
