The subjects I'm talking about are deep wrecks, 60 - 120 metres, so I need a way to try and increase the colours a little bit. A red filter isn't an option, it will cut out too much light. Using a video light will help on the close ups, however it wont have the cut through for the long shots.... but ideally I want to be adjusting the video settings as little as possible, given the limited time I'll have at depth.

I noticed that the amphibico offering has a colour slate on the reverse, so I'll have an experiment and see how I get on. Any other suggestions for improving the colour at depth, gratefull received.