Specification
BM-7254 |
|
Model |
8-20X42 |
Magnification |
8-20X |
Objective Diameter |
42mm |
Field of View |
261ft@1000yds, 87m@1000m |
Eye Relief(mm) |
15-13mm |
Exit Pupil Diameter(mm) |
5.2~2.1mm |
Resolution |
6.0" |
Ocular Lens Diameter(mm) |
18mm |
Close Focal Distance |
3.5mm |
Lens Coating |
FMC |
Focus system |
Cent. |
Prism System |
Roof |
Type of Prism |
BK7 |
Eyecups |
Twist-up |
Weight |
570g |
Size |
129*54*159mm |
Why do we choose Variable Power Binoculars?
1.Preference for Adjustable Optics:
Some users simply prefer the flexibility of being able to change the magnification based on personal preference or specific use case. It allows for a more customizable viewing experience tailored to individual needs.
2.Educational and Astronomical Use:
In educational settings or for amateur astronomers, variable power binoculars can be beneficial for observing celestial objects. They allow users to zoom in on specific features of the moon, planets, or stars without requiring a telescope. This makes them a versatile tool for both terrestrial and astronomical viewing.
3.Space-saving:
For travelers or outdoor enthusiasts who have limited space in their gear, carrying one pair of binoculars that can serve multiple purposes can be advantageous over carrying multiple pairs.
How to choose Variable Power Binoculars ?
Consider Specific Use Cases
Nature Observation:
If you're primarily using the binoculars for birdwatching or wildlife observation, consider models with a wider field of view and good close focusing capabilities (typically within 6-10 feet).
Astronomy: For stargazing and astronomical observation, prioritize binoculars with larger objective lenses (e.g., 50mm or more) to gather more light, especially if you plan to observe faint celestial objects like nebulae or star clusters.
Outdoor Activities:
If you're using the binoculars for activities like hiking, hunting, or marine use, look for models that are rugged and waterproof. A rubber-armored exterior provides durability and a secure grip, even in wet conditions.
9. Adjustment Mechanisms
Focus System:
Check the focus mechanism for smooth operation and precision. Some binoculars offer a dual focus system with a central focus wheel and a diopter adjustment for individual eye differences, allowing for sharper and clearer views.
Zoom Control:
Evaluate the zoom mechanism for ease of use and stability. A smooth zoom control allows for seamless transitions between magnification levels without compromising image quality.
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