Common questions about binoculars:

Binoculars can open your eyes to animals and scenery you may have never noticed otherwise. Unfortunately, the decision to buy a binocular can be very difficult when presented with the huge array of possible choices available. Our aim in answering these commonly asked questions is to give you the best possible advice, so you can choose binoculars that really do fit your needs.

What do the numbers in a binocular name mean?

How much magnification do I need?

What are Porro prism binoculars and roof prism binoculars?

What size binocular do I really need?

What is the field of view in a binocular?

How much should I spend on a binocular?

How does optical glass enhance binocular image quality?

What about light transmission and optical coatings?

What if I wear eyeglasses while using my binoculars?

Do my binoculars need to be waterproof?

What makes a binocular appear brighter?

How do I clean my binoculars?

What about the light gathering ability of my binocular?

How do I properly set the diopter on my binocular?




With a combined total of over 50 years of optics experience, the product reviewers of Eagle Optics are proud to provide birders, hunters and other outdoor enthusiasts with a comprehensive website all about optics