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WhiBal G7 Grey-Card
Whilst nowadays most underwater shooters do their white balance correction during postproduction of images, there are still many shooting situations (such as several different light sources present in one shot) in which doing it “old school” comes with clear advantages and optimized workflow.
For a manual white balance prior or during photography sessions, or as an incorruptible reference during postproduction, the grey-card from WhiBal simply does the job. The G7 is designed for low reflectivity, except that the sticker is intentionally highly reflective so that maximum TrueBlack Blackpoint level may be achieved by observing for maximum glare point. It is spectrally neutral, water- and scratch-proofed, and fits in a BCD pocket.
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