The Nikon Monarch M5 binoculars offer excellent value for their price point, featuring a compact and lightweight design that's comfortable to use. Reviewers praised the ergonomic rubber armoring, smooth focus mechanism, and optical performance with fully multi-coated lenses. However, the narrow field of view was consistently noted as a drawback, with the 8x42 model offering only 335 feet at 1,000 yards. The binoculars are nitrogen-purged and waterproof, fogproof, and shockproof, making them suitable for outdoor use. They're recommended for birding and general observation, though the limited field of view may make them less ideal for fast-moving subjects.

Full review
Build Quality and Design
Nikon Monarch M5 binoculars represent a refined evolution of the company's popular Monarch line, featuring a compact, lightweight design that balances portability with robust construction. The 8x42 model weighs just 22.5 ounces, making it one of the lighter full-size binoculars in its class, according to optics4birding.com. The rubber armoring provides a secure grip and a comfortable feel, with shallow thumb grooves and a no-slip surface that prevents slippage during extended use. The design includes ergonomically molded shapes that fit naturally in the hand, with a black rubber coating that is both tactile and slightly textured for better handling. The binoculars are nitrogen-purged and waterproof, fogproof, and shockproof, as claimed by the manufacturer. All models feature a detachable neck strap, soft case, and objective lens covers, with the latter designed with a double ring to prevent slippage, as noted by allaboutbirds.org.
The 10x42 model, which was tested by outdoorgearlab.com, measures 145mm in length and weighs 600g, making it notably compact for a 42mm binocular. The body is constructed from composite materials that provide warmth and a sculpted shape for comfortable handling. The focus knob is large, smooth, and requires about 1.25 turns to adjust from close focus to infinity, as reported by optics4birding.com. However, the diopter adjustment ring lacks a locking mechanism, which can be a minor inconvenience, according to outdoorgearlab.com. The eyecups are twist-up with click-stops, offering three positions for optimal eye relief, and the binoculars feature a soft-to-the-touch neck strap with a non-slip interior coating, though testers found the texture slightly scratchy after extended use.
Optical Performance
Optical performance of the Nikon Monarch M5 binoculars is generally strong, with full multi-coating and phase-coating of lenses and prisms contributing to improved optical clarity. The 8x42 model delivers a 335-foot field of view at 1000 yards, while the 10x and 12x models offer 293 and 267 feet respectively, according to optics4birding.com. The Monarch M5s utilize ED (extra-low dispersion) glass, which helps suppress chromatic aberration, as noted by cliftoncameras.co.uk. However, some reviewers have pointed out that the focus becomes blurry at the edges of the field of view, and chromatic aberration can be noticeable in bright light when focusing on high-contrast objects, as reported by optics4birding.com. Outdoorgearlab.com found that while the clarity is decent for the price range, slight aberration appears at the extreme edges, manifesting as magenta and cyan hues.
While this is good for an affordable binocular, it falls short of top-tier models. The 8x42 model offers 19.5 mm eye relief, which is excellent for most users, including those who wear glasses, while the 12x42 version provides only 15.1 mm, which may cause issues for eyeglass wearers. The focus mechanism is smooth and precise, with a 1.25-turn adjustment range, as noted by optics4birding.com. The binoculars also feature a large focus knob that is easy to turn, and the diopter ring moves smoothly when force is applied, though it lacks a locking mechanism, as reported by outdoorgearlab.com. The field of view in the 8x42 model was measured at 51 degrees, which is narrower than the average for the test group, according to outdoorgearlab.com, though it still provides a clear and bright image.
Real-World Performance
Field testing reveals that the Nikon Monarch M5 binoculars perform well in practical applications, particularly for birding and casual astronomy. The binoculars were found to be comfortable to use for extended periods, with the rubber coating providing a secure grip and the weight being well-balanced for most users. The focus mechanism was praised for its smoothness and ease of adjustment, with testers noting that it required only 1.25 turns to adjust from close focus to infinity. However, the field of view was considered narrow compared to other models in the same price range, with outdoorgearlab.com reporting that only 51 fence boards were visible, compared to an average of 54 and a high of over 60 in top-tier models.
In terms of close focus range, the Monarch M5 8x42 achieved 6.2 feet in testing, which is 2 feet closer than the manufacturer's stated 8.2 feet, according to outdoorgearlab.com. This close focus performance is better than average and comparable to premium models. The binoculars also demonstrated good performance in handling, with testers noting that the weight distribution was acceptable and the grip was secure. The eye relief was found to be generous at 19.5 mm for the 8x42 model, which is beneficial for eyeglass wearers. However, the lack of a locking diopter ring and limited range in eyecup adjustments were noted as minor drawbacks, according to outdoorgearlab.com. The overall field of view in the 8x42 model was measured at 51 degrees, which is considered narrow by modern standards.
What Reviewers Loved
Reviewers consistently praised the Nikon Monarch M5 binoculars for their comfortable handling, excellent build quality, and solid optical performance. The rubber armoring and ergonomic design were highlighted as major strengths, with optics4birding.com noting that the binoculars are lightweight and comfortable to use for extended periods. The focus knob was described as large, smooth, and easy to adjust, with a 1.25-turn range from close focus to infinity, according to optics4birding.com. The 8x42 model's eye relief of 19.5 mm was particularly appreciated, as it allows for comfortable viewing with glasses, as noted by allaboutbirds.org. The binoculars were also commended for their waterproof, fogproof, and shockproof features, which make them suitable for outdoor use in varying weather conditions.
The optical clarity and brightness were also frequently praised, with outdoorgearlab.com noting that the binoculars offer impressive brightness and clarity for their price range. The use of ED glass and phase-coated prisms was highlighted as contributing to a clean, sharp image with minimal chromatic aberration, as reported by cliftoncameras.co.uk. The 8x42 model was found to be particularly effective for birding, with testers noting that it delivered a bright and sharp image that brought out subtle details in bird plumage, as described by allaboutbirds.org. The binoculars were also appreciated for their compact design and lightweight construction, making them ideal for extended outdoor use, according to outdoorgearlab.com. The focus mechanism was noted for being smooth and precise, with testers finding it easy to lock in on targets quickly.
Where It Falls Short
Despite their many strengths, the Nikon Monarch M5 binoculars do have notable shortcomings that detract from their overall appeal. The field of view is consistently criticized as narrow, with outdoorgearlab.com reporting that the 8x42 model only allowed for 51 fence boards to be visible, compared to an average of 54 and a high of over 60 in top-tier models. This narrow field of view can make it difficult to locate and track fast-moving subjects, particularly birds in flight. The focus mechanism, while smooth, was noted by some reviewers as lacking the precision of higher-end models, according to outdoorgearlab.com. Additionally, the lack of a locking diopter ring was seen as a minor inconvenience, as reported by outdoorgearlab.com, and the limited range in eyecup adjustments was another point of criticism.
Chromatic aberration was also a recurring issue, with optics4birding.com noting that the focus becomes blurry at the edges of the field of view, and chromatic aberration is noticeable in bright light when focusing on high-contrast objects. The binoculars also fall short in terms of close focus range, with the 12x42 model offering only 15.1 mm of eye relief, which may be insufficient for some eyeglass wearers, according to optics4birding.com. The lack of a locking mechanism for the diopter ring and the limited range in eyecup adjustments were also noted as drawbacks, as reported by outdoorgearlab.com. The binoculars' weight, while generally comfortable, was noted by some testers to be slightly heavy for smaller hands, according to outdoorgearlab.com. Additionally, the rubber coating, while providing a secure grip, was found to be slightly tacky and could leave hands feeling sticky on hot days.
Who It's Best For
The Nikon Monarch M5 binoculars are best suited for birders and casual outdoor enthusiasts who value a compact, lightweight design with solid optical performance and good build quality. The 8x42 model is particularly recommended for those who wear glasses, as it offers excellent eye relief of 19.5 mm, according to allaboutbirds.org. The binoculars are also ideal for users who prioritize portability and comfort, as they are lightweight and easy to handle, making them suitable for extended outdoor use. The waterproof, fogproof, and shockproof features make them suitable for a wide range of weather conditions, as noted by optics4birding.com. The binoculars are also well-suited for users who want a mid-range option that offers good value for money without compromising on essential features.
However, the Monarch M5s are not ideal for users who require a wide field of view or those who need to focus on very close subjects. The narrow field of view can make it difficult to locate and track fast-moving subjects, particularly birds in flight, as noted by outdoorgearlab.com. The 12x42 model's limited eye relief of 15.1 mm may also be a drawback for eyeglass wearers, according to optics4birding.com. Additionally, the lack of a locking diopter ring and limited range in eyecup adjustments may be inconvenient for users who frequently adjust their binoculars, as reported by outdoorgearlab.com. The binoculars are also not recommended for users who prioritize extreme close focus capabilities, as the close focus range is only 6.2 feet for the 8x42 model, which is slightly below average.
How It Compares to Alternatives
When compared to similar models in the same price range, the Nikon Monarch M5 binoculars offer solid performance but fall short in some areas. The 8x42 model is priced at $299.95, which is competitive with other mid-range binoculars, according to outdoorgearlab.com. The binoculars are comparable to the Vortex Diamondback 8x42, which costs slightly less, but the Monarch M5 offers better optical quality, as noted by birdwatching.com. The Monarch M5 also compares favorably to the older Monarch 5 models, with improvements in focus range and eye relief, according to birdwatching.com. However, the field of view is narrower than that of some competing models, which may be a disadvantage for users who prioritize wide-angle viewing.
In terms of optical performance, the Monarch M5s are on par with other mid-range binoculars, though they do not match the brightness and clarity of premium models. The use of ED glass and phase-coated prisms provides good image quality, but the slight aberration at the edges of the field of view is a noted drawback, as reported by optics4birding.com. The binoculars are also compared to the Monarch M7, which offers a wider field of view and better performance in some areas, according to cliftoncameras.co.uk. The M7 models are more expensive but provide better value for users who prioritize wide-angle viewing and minimal chromatic aberration. The Monarch M5s are best suited for users who want a balance of affordability, portability, and decent optical performance, but may not be ideal for those who require the absolute best in image quality.
Value at This Price
At their listed prices, the Nikon Monarch M5 binoculars offer solid value for money, particularly for users who prioritize build quality, comfort, and decent optical performance. The 8x42 model is priced at $299.95, which is competitive with other mid-range binoculars, according to outdoorgearlab.com. The binoculars are priced some $200 lower than the Monarch M7, yet they offer a similarly comfortable, well-built design with excellent optics, as noted by allaboutbirds.org. The inclusion of features such as waterproofing, fogproofing, shockproofing, and a detachable neck strap adds to their value proposition. The rubber armoring, ergonomic design, and smooth focus mechanism also contribute to their appeal, as reported by optics4birding.com. The binoculars are particularly well-suited for users who want a mid-range option that offers good value without compromising on essential features.
However, the value proposition is somewhat diminished by the narrow field of view and the lack of a locking diopter ring, which are drawbacks that may not be acceptable to all users. The binoculars are also not the most affordable option in their category, and users seeking a lower price point may find better value in competing models, according to outdoorgearlab.com. The Monarch M5s are best suited for users who prioritize a balance of affordability, portability, and decent optical performance, but may not be ideal for those who require the absolute best in image quality or want to maximize their field of view. The binoculars are also not recommended for users who need to focus on very close subjects or who require a wide-angle viewing experience.
Strengths
- +Compact and lightweight design at 22.5 oz
- +Ergonomic black rubber armoring with no-slip surface and thumb grooves
- +Smooth and easy-to-use focus knob requiring only 1.25 turns
- +Fully multi-coated and phase-coated lenses for improved optical performance
Watch-outs
- −Narrow field of view (335 ft at 1000 yards for 8x42 model)
- −Blurry edges in the field of view
How it compares
The Nikon Monarch M5 is more compact and lightweight than the Zeiss Victory SF, but it suffers from a narrow field of view compared to the Vortex Viper HD and lacks the superior close focus of the Zeiss model. While it offers better build quality than the Kowa Genesis, it doesn't match the Athlon Midas ED in CA correction or the Vortex Viper HD's low light performance.
Who this is for
At a glance: compact users who prioritize portability over field of view.
Why you’d buy the Nikon Monarch M5
- Compact and lightweight design at 22.5 oz.
- Ergonomic black rubber armoring with no-slip surface and thumb grooves.
- Smooth and easy-to-use focus knob requiring only 1.25 turns.
Why you’d skip it
- Narrow field of view (335 ft at 1000 yards for 8x42 model).
- Blurry edges in the field of view.
Rating sources
“This binocular is one of our Top Picks. February 13, 2023 Share At A Glance Nikon Monarch M5 8×42 binoculars. Image by Hugh Powell. PROS: Very sharp and bright image Sturdy build quality Comfortable, compact, and fairly lightweight”
“Taking delivery of this (hopefully) dynamic duo gave me the perfect excuse (not that one was really needed) for a weekend campervan trip to the Brecon Beacons – an ideal location for putting both to the test under field conditions.”
“They werent perfect, but for the money they were pretty damned good.”
Our 4.2 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.