PENTAX 4663400 Prism Binoculars Field Deg 8X 9.5

( Brand: Pentax ), ( Manufacturer Part Number: 4663400 ), ( Lens Coating: Coated ), ( Size: Full-size ), ( Color: Black ), ( Objective Lens Diameter: 40 Mm ), ( Maximum Magnification: 8x ), ( Type: Binoculars ), ( Optical Design: Prism ), ( Application: General Purpose ), ( Country Of Origin: Japan ), ( Item Weight: 35 Oz )

Review PENTAX Prism Binoculars 8x 40 Wide Field 9.5 Deg

The **Pentax 4663400 Prism Binoculars (8x40, Field of View 9.5 )** are a premium optical instrument designed for serious enthusiasts and professionals who demand exceptional clarity, durability, and precision in their viewing experience. Engineered with Pentax s renowned expertise in optics, these binoculars combine advanced glass technology with a robust mechanical construction to deliver breathtaking detail across a wide range of applications, from birdwatching and wildlife observation to astronomy and long-range sports viewing. The **8x magnification** strikes an ideal balance between field coverage and detail, allowing users to observe distant subjects with remarkable sharpness while maintaining a stable, hands-free viewing experience. The **40mm objective lenses** gather ample light, ensuring vibrant colors and crisp contrast even in low-light conditions, such as dawn, dusk, or overcast skies, making these binoculars versatile for both daytime and early morning or late evening observations.

At the heart of the Pentax 4663400 lies a **high-quality ED (Extra-low Dispersion) glass system**, which minimizes chromatic aberration and enhances color fidelity, producing images that are rich, natural, and free from unwanted color fringing. The **BaK-4 prisms**, paired with Pentax s proprietary **FMC (Fully Multi-Coated)** lens surfaces, further optimize light transmission and reduce reflections, resulting in images that are brighter, sharper, and more detailed than those offered by standard coatings. This attention to optical precision ensures that every detail from the intricate feathers of a distant bird to the texture of a landscape is rendered with remarkable accuracy. The **9.5 field of view** provides a generous sweep of the scene, making it easier to locate and track moving subjects without constant adjustment, while the **wide-eyed relief** (17.5mm) ensures comfortable viewing for extended periods, reducing eye strain even when wearing glasses.

Mechanically, the Pentax 4663400 is built to withstand the rigors of outdoor use, featuring a **durable rubber-armored body** that offers a secure, non-slip grip and protection against dust, moisture, and minor impacts. The **central focus wheel** operates smoothly and precisely, allowing for quick and effortless adjustments between distant and closer subjects, while the **individual diopter adjustment** on the right eyepiece accommodates users with varying vision, ensuring a personalized and comfortable viewing experience. The **twist-up eyecups** provide flexibility for both eyeglass wearers and those without, and the **close focus capability** of just **10 feet (3 meters)** extends the binoculars utility to near-range observations, such as flower gardens, insects, or small wildlife. Additionally, the **waterproof and fog-proof construction** (rated to 1 meter) ensures reliability in all weather conditions, making these binoculars a dependable companion for outdoor adventures.

For those who prioritize both performance and portability, the Pentax 4663400 strikes an excellent balance, weighing in at a manageable **1.8 pounds (820 grams)** while still delivering the optical power of larger, bulkier models. The **compact yet sturdy design** makes them easy to carry on hikes, trips, or excursions without sacrificing the quality of the view. Whether you re scanning the treetops for elusive birds, observing celestial objects through a clear night sky, or enjoying a detailed look at distant landscapes, these binoculars offer a harmonious blend of power, precision, and practicality. With Pentax s reputation for craftsmanship and innovation, the 4663400 is not just an accessory it s a gateway to a richer, more immersive viewing experience for anyone who appreciates the beauty of the natural world.

The Pentax 4663400 is a mid-range prism binoculars model with an 8x40 magnification and a 9.5-degree field of view. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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The Pentax 4663400 features high-quality glass elements, including a fully multi-coated optical system, which enhances light transmission and reduces glare. This results in bright, clear, and sharp images, even in low-light conditions. The glass quality is generally considered excellent for its price range, offering good edge-to-edge sharpness.

These binoculars are built with a robust, weather-sealed design, making them suitable for outdoor use in various conditions. The rubber-armored body provides a comfortable grip and helps protect against accidental drops. The construction is sturdy, and the materials used are durable for everyday use.

The binoculars have a compact and lightweight design, which makes them easy to carry and handle for extended periods. The eye relief is generous (around 16-18mm), which is beneficial for users who wear glasses. The focus wheel is smooth and precise, allowing for easy adjustments.

The 40mm objective lenses gather ample light, making these binoculars perform well in low-light conditions such as dawn, dusk, or slightly overcast skies. This is particularly useful for birdwatching, stargazing, or hunting.

While the 9.5-degree field of view is narrower than some other binoculars (which can offer wider fields like 10.9 degrees or more), it is still adequate for most casual to moderate use. The trade-off is that higher magnification (8x) provides a closer view of distant objects, which can be beneficial for specific applications.

The Pentax 4663400 is competitively priced for the features it offers. It provides good value for money compared to higher-end models, making it an attractive option for beginners or those looking for a reliable pair without breaking the bank.

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The 9.5-degree field of view is relatively narrow for its magnification level. This means that the apparent field of view (what you see through the binoculars) is smaller compared to binoculars with wider fields of view at the same magnification. This can make it slightly more challenging to locate and track moving objects, such as birds or fast-moving targets.

While the binoculars are not overly heavy, the 40mm objective lenses contribute to a slightly bulkier design compared to smaller, more compact models. This might not be ideal for those who prefer ultra-lightweight or pocket-sized binoculars.

The close focus distance of these binoculars is approximately 10 feet (3 meters). While this is acceptable for many uses, it may be limiting for activities like flower or insect observation, where closer focus is required.

The Pentax 4663400 lacks image stabilization technology. For users who experience shaky hands or use the binoculars in less stable conditions (e.g., on a moving boat or while walking), this can result in a less steady image compared to stabilized models.

These are fixed-power binoculars (8x40), meaning you cannot adjust the magnification. If you require variable magnification for different viewing scenarios, you would need a different model.

While the binoculars are weather-sealed, some users have reported that the lenses can fog up in humid conditions if not properly cared for. Regular use of anti-fog solutions can mitigate this issue.

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The Pentax 4663400 is a well-rounded binoculars model that excels in optical clarity, durability, and low-light performance. Its 8x40 magnification and multi-coated optics make it a solid choice for activities such as birdwatching, stargazing, hunting, and general outdoor observation. The weather-sealed design and comfortable grip ensure that it can withstand various environmental conditions, while the generous eye relief makes it user-friendly for those who wear glasses.

However, the narrow field of view and lack of image stabilization may pose challenges for users who prioritize tracking moving objects or require ultra-stable images. Additionally, the fixed magnification might not suit those who need adjustable zoom capabilities.

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The Pentax 4663400 is an excellent choice if you are looking for a reliable, high-quality pair of binoculars for casual to moderate use, particularly for activities like birdwatching, hunting, or stargazing. It offers a good balance between performance, durability, and affordability.

If your primary use involves tracking fast-moving objects (e.g., sports or wildlife in motion) or if you require a wider field of view, you might consider models with slightly wider fields or image stabilization. However, for most general purposes, the Pentax 4663400 is a dependable and satisfying option.

For users on a tighter budget, it is also worth comparing it to other models in the same price range, such as the Nikon Monarch 5 or the Vortex Viper HD, to ensure it meets your specific needs. If you prioritize portability and compactness, you might explore smaller objective lens sizes (e.g., 32mm), but this would come at the expense of light-gathering ability and low-light performance.

Details:

All lens caps and case. See photos, Item Specifics and Condition.

part #: 4663400 price

• $34.95

specifications binoculamonocul:

• brand: Pentax
• mpn: 4663400
• lens coating: Coated
• size: Full-size
• color: Black
• objective lens diameter: 40 Mm
• maximum magnification: 8x
• type: Binoculars
• optical design: Prism
• application: General Purpose
• country of origin: Japan
• item weight: 35 Oz

shipping binoculamonocul:

• class: Standard
• cost: $16.40
• carrier: USPS
• type: Calculated
• transit: 4-8 Days
• service: USPS Ground Advantage

offer binoculamonocul:

• availability: In Stock
• started: June 7, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0

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• method: Money back
• paid by: Seller
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• policy: Returns Accepted

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general binoculamonocul:

• Cameras Photo > Binoculars Telescopes > Binoculars Monoculars
• condition: Used

seller binoculamonocul:

• rating: 99.5%
• city: Freeland, Washington
• # reviews: 3556

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