I have a set of the 18% grey card with instructions for using them for white balance and for exposure. There are 2 at 10x8 and 1 at 5x4, but I thought that if anyone would like one for their pen photography I could cut down the 10x8 to make 8 5x4 cards making 9 5x4 cards total if there are nine people who would like one. I don't want anything in return except for someone to either photocopy or scan the instruction for others to use. Any takers or do they get forgotten about for another 20 years.
Peter
Peter