Features:
This filter can be used for waterproof camera housing underwater photography.
Fit for SLR camera / digital camera / camcorder DV with a 67mm diameter lens or Camera underwater housings with 67mm thread mount. Such as: Canon S110, S100, S95, S120, G12 ,G15, G16, G1X, Sony NEX-5N, Nex-5R, RX100, GM1 underwater housing, etc.
The filter can be installed and removed during the course of the dive.

Functions:
Starting from 15-20 ft Underwater, red color starts to wash out by the filtering effect of water, the deeper you dive the more of the warm red spectrum is filtered out from the ambient light. 
In order to get warm colors back, you need to filter out blue spectrum with this filter.
It is used to restore the warm color absorbed by blue water and you can make nice colorful pictures and videos.

Package Includes:

• 1 x 67mm Red Filter