This article is important for you to use UMMY free diving mask for a long time, so please read it to the end.
We have received the following inquiries from our customers:
"Even though I use anti-fog lenses on my mask, they fog up quickly."
Maybe some of you who have used a free diving mask have had similar experiences.
First, let me give you the conclusion: There are three main causes of lens fogging:
① Sunscreen cream is on the lens
② The lens coating is not removed.
3) The lens is scratched
Regarding ①, if sunscreen cream gets on the lenses, it can cause fogging, so be sure to use the appropriate amount.
Regarding the lens coating in ②, this applies to glass lens masks. Among UMMY products, this applies to the Marine single-lens. As a reminder, removing the lens coating means scrubbing the inside of the lens with an abrasive such as toothpaste to remove the coating and make it less likely to fog up. However, masks other than Marine have resin (plastic) lenses, which will get scratched if rubbed, so removing the coating is a big no-no.
Returning to the topic, glass lenses such as Marine require the coating to be removed before use.
Put a small amount of toothpaste or cleanser inside the lens, then scrub it with a toothbrush or similar to remove the coating before using it again.
And the main issue is point ③
Glass lens type masks are not prone to scratches to begin with, so this rarely applies to them. Most freediving masks have curved lenses made of resin (plastic). Plastic lenses have the advantage that the shape of the lens can be flexibly designed, so they are often curved to reduce water resistance, and many have cool-looking shapes. However, they have the disadvantage that the lenses are very prone to scratches. Even wiping them with a dry cloth or tissue can cause scratches, so care must be taken when handling them. Minor scratches are rarely a problem, but as the scratches become deeper, visibility becomes poor and the lenses become foggy more quickly.
Cases that are easily scratched
・Wipe the lens with a dry cloth or tissue.
・I'm worried about the dirt on the lens and I scrub it with my fingers.
- Using the camera in very shallow waters near the beach (small pebbles are flying around and the lens is easily scratched)
・Placing the mask directly on the beach (in direct contact with sand)
- Scenes where masks and multiple pieces of equipment are placed in a bag or similar and come into contact with each other
Use a stick-type anti-fog product
The above are some examples of situations where damage is likely to occur.
The easiest solution is to do the opposite of the above:
How to prevent scratches on lenses
・Try to remove dirt from the lenses with running water as much as possible. If the dirt does not come off with running water, use a glasses cloth or alcohol wipes for lenses.
・Do not use the mask in very shallow water with pebbles flying around.
・Do not place your mask directly on the beach
・ Always store and transport masks in a mask case
-Do not use stick-type anti-fog products
This alone will help prevent many injuries.
Please be sure to keep this in mind!
Let's continue to enjoy free diving with UMMY diving masks!