For Sale, two unused Magic filter gels for blue water:
1x MN10.5 for the Nikkor 10.5 DX Fisheye - £15 plus postage
1x M77-s for a 77mm filter size lens - £20 plus postage
Designed to work with white balancing, Magic filters are for ambient light shooting underwater - so with no strobe.
For more info, http://www.magic-filters.com
PM me if you'd like more info. These filters have never been used, never been in water!