Without Ambient Filter: mismatch of color temperatures between ambient light and artificial lighting.
With ambient filter: the color temperature of the artificial lighting matches exactly with ambient light.
KELDAN Ambient Filters
The perfect solution when you white balance your camera to the ambient light. The KELDAN Ambient Light Filter is available for the 24X, 18X, 8X and 4X lights and converts the light into the same spectrum as the ambient light in order to avoid mixed light conditions.
Avoids mixed light condition
Available for blue, blue-green and green water
Two versions available for each water color: AF 6 X for best match at 6 m depth AF 12 X for best match at 12m depth