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split or single lens dive mask


Question
What are the advantages and disadvantages to having dual lens or a single lens in a dive mask.

thanks

Answer
Hi Jon.  As you have noticed there are several distinguishing features of masks now.  Ultimately the two most important will be how comfortable it feels on your face and that it does not leak.  Since we all have different features that define our face and headm not all masks ill accomplish this for every person.

Regarding your question:  A single lens mask typically weighs more than a dual lens because it has more square inches of glass.  Since there is less requirement for a frame in the center of the mask, the diver will have a less obstructed view.  For some folks, the need to have lot's of glass in front of their eyes is important.  Dual lenses tend to make the mask a lower volume mask meaning it will be less buoyant (filled with air) and easier to purge water our of if any does get in.  Finally, the style and shape of the lens effects how easy it is to get your fingers in the nose pockets for equalizing your ears.

I encourage you to try on several masks so you can consider all these factors.  If possible, use them in a pool to ensure they feel right in the water as well.

thanks for your question and have fun diving.  Jesse

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