All the optical components of binoculars (lenses and prisms) should be coated to minimize light loss and reflection problems inside the binocular. A poorly-coated binocular can lose up to 50% of the light initially gathered through the objective lens, resulting in a poor quality image. By coating the optical components with a fine film of chemicals, light loss can be greatly decreased. The highest quality binoculars have multiple coatings on all the optical components. These are known as “fully multi-coated” binoculars. These binoculars have the least loss of light and the result is a higher quality image.
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