I had the chance to play with some accessories I want to use on my Nikon S3 today, although it is such a tiny housing it seems a pit to bolt anything on to it!

I really like the INON UW fisheye lens - the UWF 165. It is much wider than the UWL and I was pleased that the camera works with this - i.e. does not see the sides of the UFL lens (on land). Here is a test shot taken through it (it is not in focus as the lens is an UW optic, and sorry about my hand being in the shot - I was just holding it in place).

I don't think that INON make a mount for this lens for this housing (WP-CP5). Does anyone know different? I know they make them for the WP-CP1, CP2 and CP4. Anyway it doesn't look to hard to modify one.
I also tried the Magic Filter with the Nikon S3. One of the reasons I got the S3 was that the manual WB was good and just as important easy to set. Fixing the Magic Filter was ridiculously easy. Just a piece of tape was needed to hold it in place, and I was pleased that the camera's WB could counteract this strong filter in doors, meaning that I should be able to use the filter from the surface down to 15m underwater to help colours.

It really is a great benefit having a camera with an internal zoom lens.
Alex