Hi,
recently I tried similar things and found some lenses that worked.
Testing the lenses only by filling them with water and looking through it is not sufficient approval for the funtion under water, I think. If you attach the lens at the outside of your mask the refraction changes and results in a "different" lens.
In my opinion it is better to attach the lens inside the mask, so you can clearly see in- AND outside the water.
Am I right?
Cheers, Carsten
PS: Newly infected, I will check it out with a pair of 10x lenses and tell you in advance...
