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Can I upgrade a 1.5 index lens to 1.7 index lens without replacing the lenses?
I just bought standard 1.5 index lens but I think they are a little thick for me. I wonder if I can make it thinner by upgrade it to 1.7 index without...
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How Thick would a 1.57 index lens be?
My current lens is standard 1.5 and they are a little thick for me, about .5 inches thick. I am thinking of 1.57 index, Can anyone give me a little perspective...