Pentax
Pentax 61393 MCF Jupiter II 8x20 Binocular
★★★★★
Lightweight Optics for On-the-Go Adventures The Pentax MCF Jupiter II 8x20 Binoculars offer a compact and lightweight design perfect for casual use, travel, and outdoor activities. These binoculars deliver great optics and reliable performance at an affordable price. Specifications Magnificatio...
$49.99*
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*Price sourced from Amazon.com. Last updated:Jul 15, 2026.Price and availability are subject to change.
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Overview
Lightweight Optics for On-the-Go Adventures
The Pentax MCF Jupiter II 8x20 Binoculars offer a compact and lightweight design perfect for casual use, travel, and outdoor activities. These binoculars deliver great optics and reliable performance at an affordable price.Specifications
- Magnification: 8x
- Objective Diameter: 20 mm
- Angular Field of View: 50°
- Apparent Angular Field of View: 6.2°
- Real Linear Field of View: 324 ft @ 3000 ft
- Maximum Exit Pupil: 2.50 mm
- Eye Relief: 10 mm
- Color: Silver Black
- Dimensions: 1.7 Height x 4.2 Width x 3.0 Depth
- Weight (Approximate): 6.20 oz
Key Features
Type: Prism Binoculars
Specifications
Magnification
8x
Objective Lens Diameter
20mm
Type
Prism Binoculars
Model
Jupiter II
Pros & Cons
👍 Pros
- Compact and lightweight design makes it highly portable for on-the-go observations.
- Equipped with 8x magnification, bringing distant subjects significantly closer for detailed viewing.
- Features a 20mm objective lens, which offers a good balance of light gathering and compact size for daytime use.
- Utilizes prism binocular technology, typically providing a brighter and sharper image compared to non-prism optics.
- Brand reputation of Pentax suggests a focus on quality optics and durable construction.
👎 Cons
- The 20mm objective lens might limit light gathering capability in dim lighting conditions, affecting image brightness.
- Without further specifications, the field of view and eye relief are unknown, which could impact user comfort and viewing experience.
- Specific details on weather sealing or ruggedization are not provided, suggesting it may not be suitable for harsh environments.
- The absence of anti-reflection coatings or specialized glass types in the description means image clarity might be standard rather than exceptional.
- Fixed magnification means it lacks the versatility of zoom binoculars, which might be a limitation for some users.
Frequently Asked Questions
What type of optical device is the Pentax 61393 MCF Jupiter II?
The Pentax 61393 MCF Jupiter II is classified as Prism Binoculars, indicating its optical design for viewing distant objects.
What is the magnification power of these binoculars?
These binoculars offer 8x magnification, allowing you to view objects eight times closer than with the naked eye.
What is the objective lens diameter of the Pentax Jupiter II binoculars?
The objective lens diameter of these binoculars is 20mm, which influences the amount of light collected and the brightness of the image.
Are these binoculars suitable for use in low-light conditions?
With an 8x20 configuration, these binoculars are generally better suited for daytime viewing rather than extensive low-light observation due to the 20mm objective lens size.
Are there any specific features mentioned about the optical quality?
The product is described as "Prism Binoculars," implying the use of prisms in its optical system to correct image orientation, a standard for binoculars.
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