cgauntt

I have a Canon S40 with the Canon WP-DC300 housing. I want to add a strobe and am most strongly considering the DS-125 for the TTL operation. Because this strobe fires off the flash from the camera, if I don't do something to deflect or diffuse the camera's strobe, won't I get backscatter? If so, any suggestions on how to prevent this problem? If a different strobe set-up would be better, I'm open to any suggestions. Thanks