What is the Difference Between Waterproof and Fog Proof Binoculars?

What is the Difference Between Waterproof and Fog Proof Binoculars?

Waterproof and fog proof are terms you hear frequently in the clothing, outdoor gear and electronics industries. But what exactly do they mean? And are they interchangeable with words like hydrophobic, water-repellent and weatherproof?

A simple definition of waterproof is “impervious to water.” Waterproof products are completely impervious to water, which would be impossible for them to do if they weren’t sealed in such a way as to prevent moisture from passing through. Some examples of waterproof items include raincoats, boots, shoes, binoculars and some tents. The waterproofness of items is measured using a standard called the Ingress Protection Rating (IP), with IP 0 meaning no protection and IP 6 indicating complete protection against water, even under high pressure and temperature.

The other main definition of waterproof is to be able to withstand immersion in water for a short period of time. This is more easily achieved with a product that has been treated to make it hydrophobic. This process involves coating a surface with chemicals that allow the water to bead and drop off, rather than be absorbed or repelled.

If a pair of binoculars is described as being waterproof, it means that they have been treated to make them hydrophobic. This will also make them resistant to dust and dirt particles, so you don’t end up with a layer of debris over the lenses. In some cases, you can find binoculars that are both waterproof and fog proof, with the latter being achieved by replacing the air inside the binoculars with nitrogen gas to stop it from absorbing moisture and becoming misty.

Waterproof and fog proof binoculars are an absolute must for anyone who regularly uses them in bad weather or humidity. They’re perfect for hunters and prepper who spend a lot of time outdoors and at sea, as well as boaters and birders. Waterproof and fog proof binoculars will keep your vision clear in any environment, and can also be a safety feature when used by workers in dangerous or inclement conditions, such as those who work with hazardous materials, in extreme temperatures or in the rainforest.

Waterproof and fog proof binoculars typically have an external seal that protects them from rain and other liquids, but they will not be fully waterproof until they have been tested to a higher standard, such as IP 6 or JIS class 5. They are likely to leak if submerged in water for an extended length of time, however. If you’re looking for waterproof binoculars, you should look specifically for ones that have been tested to a higher level.