The Keldan Underwater Color Checker

I had the opportunity to receive some colorcheckers produced by Keldan, a Swiss company specializing in the marketing of lights for divers. The product is a color checker and gray card.

The Keldan Color Checker

In the above photo you can se two of these objects: on one side they have the X-Rite ColorChecker Classic, on the other side they have a neutral gray target.