Nemrod,
Thanks for the advice. When I called reef photo and asked them about your suggestion: Inon Optical D Cable (L Type) Cap W33 Set for Canon WP-DC9, they told me that I need Fiber Optic Cable Adapter Set for Compact Digicams (search keywords: rpv foa) and Inon Optical D Cable (43 cm L Type) instead.
Does your setup need any adjustments to fit into Ikelite s90 housing? I like your suggestion better since it does not glues to the housing and also shields the internal flash. What do you think about reef photo variant?
Thanks
I actually just purchased an Ikelite S90 housing from Reef. I told them I had an s-2000 and they had a solution for me. They drilled a hole in the Ikelite flash blocker and inserted an inon bush plug into the whole and put a round plastic washer on the other side to hold it in place. Simple and effective.