AboutJesse Scott Expertise I can help you with questions about what to expect when learning how to SCUBA dive; how to select a good instructor and dive shop; and how to begin diving after you have been trained. I can help out with gear questions. I am always happy to discuss topics you learned in training but would like to know more detail. I can recommend additional training and books on SCUBA diving. I can discuss NC wreck diving also. I can also discuss what`s involved in learning becoming more involved in the sport and being a rescue diver, dive master, or instructor. NOTE!! I cannot answer medical questions because I am not a doctor.
Experience I am an SSI Master Instructor and a PADI Open Water Scuba Instructor. I have over 500 dives in a wide variety of diving environments and scenarios. I have been diving for 10 years. I also teach numerous specialties including Nitrox.
Organizations PADI, SSI, NSS-CDS, DAN, NACD, PSI
Education/Credentials PADI OWSI (Open Water, Advanced OW, Rescue, Divemaster)
SSI MI (OW, Advanced OW; Night, Deep, Wreck, Boat, Nitrox, Navigation, Night, Computer, Search and Recovery, Dry Suit, Advanced Buoyancy Specialties)
Emergency First Response CPR and First Aid Instructor
DAN Diving Emergency Management Provider and Instructor
PSI Visual Tank Inspector
NACD, NSS-CDS Cavern Diver
TDI Advanced Nitrox and Decompression diver
Awards and Honors SSI Master Instructor
SSI Gold 500 Instructor
SSI Gold 500 Diver
SSI Century Instructor
SSI Century Diver
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
