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Posts belonging to Category 'Technical'

GPO Passion HD 15x50 vs GPO Passion SD 10x42 Binoculars: Image Brightness & Twilight Factor

Calendar Article | Posted by Best Binocular Reviews

I am currently testing the GPO Passion SD 10x42 Binoculars for a review I will be writing. As I still also have the GPO Passion HD 15x50 Binoculars that I recently reviewed, I thought it would be interesting to compare the views through them. I initially started this mostly to just compare the difference between […]

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Optical Coatings in Binoculars: An Analysis of Performance, Evolution, and Differentiation

Calendar Article | Posted by Best Binocular Reviews

I. Introduction to Binocular Optics and the Role of Coatings Main Optical ComponentsBinoculars are sophisticated optical instruments designed to provide magnified, stereoscopic views of distant objects. Their utility spans a wide range of applications, from astronomical observation and wildlife viewing to marine navigation and general outdoor pursuits. The fundamental optical architecture of a modern binocular […]

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Anti-Reflection Lens Coatings on Binoculars

Calendar Article | Posted by Best Binocular Reviews

Why are Lens Coatings Used? Imagine walking through a thick forest. Sunlight struggles to penetrate the dense foliage, making it difficult to see. Similarly, light encountering and then trying to pass through a series of lenses in binoculars encounters obstacles. Here’s what happens: Reflection: When light strikes an air-to-glass surface, a portion of it is […]

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The Field Stop: A Behind-the-Scenes Look at Binocular Field of View

Calendar Article | Posted by Best Binocular Reviews

The field of view (FOV) you experience is a crucial factor, determining how much of the scene is visible. But what dictates the exact boundaries of this view? Enter the field stop, a hidden gatekeeper within the eyepiece that plays a critical role in shaping your binocular experience.

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How Binoculars Work

Calendar Article | Posted by Best Binocular Reviews

Whilst you don’t need to become an expert, I always find that I am able to get the most out of something if I have at least a basic understanding of how it functions. So how do binoculars work? In this comprehensive guide, I will go over the science behind how the optics in a […]

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Scopes & Binoculars Zoom Test – 4x, 6x, 7x, 8x, 9x, 10x, 16x, 20x, 30x, 60x Magnification Comparisons!

Calendar Article | Posted by Best Binocular Reviews

Binoculars Zoom Test – 4x, 6x, 7x, 8x, 10x, 16x, 20x, 30x, 60x Magnification Comparisons Close Range – Full Video on YouTube Magnification / Zoom comparisons of monoculars, spotting scopes and binoculars, ranging from 4x to 60x, to help you determine the ideal zoom for your needs. This comprehensive test showcases various zoom magnifications, objective […]

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Apochromatic (APO) Lenses in Binoculars

Calendar Article | Posted by Best Binocular Reviews

Recently I have seen as well as reviewed and tested more and more top end binoculars that use Apochromatic lenses (APO) and whilst some manufacturers mention that their products have an APO optical system, very few (if any) go on to explain exactly what it is and what it does. So with this in mind […]

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Ocular Lens Size in Binoculars

Calendar Article | Posted by Best Binocular Reviews

The size of the ocular lenses on binoculars is something that is almost never considered when buyers decide as to which is best. However, apart from measuring them yourselves, there is actually very little way of knowing what size oculars a particular model has. This is because very few brands actually publish this information and […]

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Extra Low Dispersion Glass (ED Glass)

Calendar Article | Posted by Best Binocular Reviews

In recent years we have seen a huge increase in the number of binoculars that use ED Glass (Extra Low Dispersion Glass) in their lenses. What used to be found only on a few of the very top-end “super” binoculars, is now quite common and is used on a whole range of binoculars, even fairly […]

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Does Age Affect Image Brightness in Binoculars?

Calendar Article | Posted by Best Binocular Reviews

This week I received an interesting question from Andre in the Netherlands who wants to know if your age affects how bright an image you are able to see when looking through binoculars with different configurations: Question Hi, Andre from holland. In your tests, I see nothing about if you are a little older then […]

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