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Warning: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in ..../includes/class_bbcode.php on line 2958 Underwater magnifying glasses
Reef photo.com sells the sealed magnifier (subsea). Single lens magnifiers lose 66% of their power in water and cause distortion. The sealed lenses, according to them do not. Check their add, it shows pictures of the difference. Having used single lens magnifying glasses, I do know that they are underwhelming.