You have such a great camera with the Canon S100 and have already taken some beautiful photos with it, I loved looking through your gallery.
My course guest yesterday had exactly the same thought as she had never used either the camera or the wide angle lens before. She was amazed at the difference and it will definitely help you to take sharper photos of larger subjects like caves, wrecks and reef scenes as you will be able to get so much closer to your subject.
I've attached 2 different photos from yesterday showing one picture taken just using the camera's built-in flash and then another showing what can be achieved with the wide angle lens. It is also super useful for split-level shots too.
Hope this helps, have fun, you have a great eye for photos already and look forward to seeing more.
All the best,
S95, FIX Housing, INON UFL-165 AD Fisheye Lens with INON S-2000 strobe (just one!)
Helping compact camera users to take beautiful pictures since 2006 and have helped over 16 guests to win prizes.
Author of "Underwater Photography for Compact Camera Users" and "Underwater Photography Made Easy for Compact Camera Users DVD."Visit My Website