To get the best from your digital camera, use a gray card to set
white balance. WhiBal's G7 White Balance Pocket Card is an
extremely accurate, convenient gray card that fits in a shirt pocket,
and can be used in any shooting situation.
By photographing a gray card reference for each lighting situation,
you'll be able to achieve a proper white balance for all of your
pictures. The gray card reference picture can be used with software to
balance the color casts that various lighting conditions produce with
all digital cameras.
Spectrally neutral--reflects all colors through the spectrum
Maintains its spectral neutrality under all reasonable
temperature and environmental conditions.
Rugged--waterproof and scratchproof (color goes all the way
through, not just a coating on top).
Each card is individually measured with a precision
spectrophotometer to certify that it meets or exceeds stringent
Designed for low reflectivity, with a highly reflective sticker
so that maximum TrueBlack Blackpoint level may be achieved by observing
for maximum glare point and then backing the angle down.
Can be used to set white balance reference, black point and white