ExpoDisc installation in Light & Motion Bluefin HD housing
A month ago, Wetpixel user Daniel Deck posted a message in the forums about his experience using an Expodisc to white balance underwater. Many of us struggle with underwater white balance, especially when using wide-angle lenses. It can sometimes be difficult to fill a suitable amount of the frame with a white-balance target, and the color of the target changes as one changes the distance between it and camera.
This is a photo tutorial of how to fit an Expodisc into a Light & Motion macro lens flip-down assembly and a Light & Motion flip-down red filter.