Linary wrote:
All photolife is balanced on "50%" grey. (This 50% varies all over the shop, but most shades of grey work well - even better if you can use the same grey each time as in a grey card.) If you use a white card, you could easily be trying to achieve white balance by using an overblown white, this does not work well
Never seen a '50%' grey card.
All the ones I know of are 17-18%.