Charles Goebel
Charles Goebel
Charles holds a Master’s degree in Physics Engineering (optics and photonics specialization), has been teaching physics at school for almost 15 years and recently has started teaching a course on optics at a local university. Our irreplaceable website expert.

Latest articles

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9 Best Binoculars Made in the USA – Seeing Clearly!
Whether you’re one of the 15 million people in America who hunt or the 12 million who participate in birding, the chances are you need a good pair of binoculars to enjoy your sport or hobby. To help you get the very best binoculars made in the USA, we reviewed the cream of the crop, giving you the lowdown on the ...
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Repairing Binoculars at Home: Step-by-Step Solutions for Any Breakage
You can save yourself the expenses of visiting an optics repairs shop if you know the basics of repairing binoculars at home. Do you have one? Sky gazing, hunting, sports watching, bird watching, or nature lover, whatever your choice of activity is, if you are indeed a true lover of any, then chances are you own ...
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Best 7×35 Binoculars That Give the Crisp and Clear Image on Even the Cloudiest of Days
Do you miss when you would use binoculars as a kid? Well, you will be happy to learn that you can still use binoculars as a hobby! 7x35 binoculars are a great option for those new to the world of advanced binoculars. They are easy to use in the daytime and a great option for birdwatching and sports viewing! We have ...
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How to Collimate Binoculars? Terminology and Step-by-Step Guide!
Do you see double images on your binoculars? If yes, don't get excited that you have discovered a new place; because all you can see is actually one image. This double vision indicates that your equipment is out of collimation. It would be best if you learned how to collimate binoculars so that you can fix the issue. ...
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Roof Prism vs Porro Prism: How Big Is the Difference?
Buying binoculars for outdoor adventures and any other use may seem like an easy task, but it is not. The dilemma that most shoppers face is the choice between roof prism vs.Porro prism. You have to know the differences between these two varieties of glass that manufacturers use to construct the various models in the ...
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How to Fix Double Vision in Binoculars? Simple Steps to Follow!
If you've ever had double vision on your binoculars, you know how frustrating it can be. It makes it hard to focus on objects and get a sharp image. The defect can also cause headaches and nausea. Fortunately, you can do away with this optic defection by learning how to fix double vision in binoculars. Double ...
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5 Best Vintage Binoculars – Beautiful Addition to Your Collection
Did you know that early day binoculars had two Galilean telescopes and no prism? Since their invention in the 17th century, binoculars have been used for multiple applications. Prisms came into the picture in the 1800s, and they played a pivotal role in the development of binoculars influencing key aspects ...
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How to Use Monocular? Guide for Every Situation!
When it comes to handheld tools that help improve the sharpness of human vision over long distances, there are two common ones: binoculars and monoculars. There might be differences in their functionality depending on the manufacturers, but they generally deliver on their basic functions. There are many
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8×42 vs. 10×42: What Does It Mean and How to Choose Right?
8x42 or 10x42? This has always been the raging comparability when choosing two of the most popular personal binoculars around the globe. The 8x42 vs. 10x42 debate has been raging for years, and to date, binocular users have never really come to an agreement on which of the two sets is better. However, one sure ...
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10×50 vs 12×50: What Is the Best Choice for You?
Binoculars are great equipment that can help you see things better by spotting out the details. However, that is how far some people know, and they tend to miss the benefits that the variations of binocular sets offer. If you are familiar with binocular ...