Got a canon HG20 HD cam w/Ikelite case -- and I'm wondering which would give me wider angle of coverage: a Raynox HD-5050 conversion lens and Ikelite dome port -- or a Ikelite W-20 wet lens. I'm thinking the raynox because it's .5x - and the dome port keeps it at .5x. The W-20 is .56 but the face is flat thinking it's going to lose about 1/4 of that making it closer to a .7?
Q2 -- how about image quality?
Q3 -- what about vignetting?
Other thoughts?
Mark
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