Gray cards are NOT interchangeable!

Gray cards are NOT interchangeable

Good to know: Gray cards are NOT interchangeable! So, accordingly to video below, "18 % gray cards" (grey cards) are used to measure exposure AND "white balance gray cards" are for custom white balance. They are not interchangeable.

© Aigarsr ( Help)

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September 28, 2013


Thanks for the information.

November 21, 2012


thanks for this suggestion ;)

November 20, 2012


Thanks for sharing...

November 20, 2012


Thanks, very few people know about that tiny green "Useful" button :)

November 20, 2012


Actually that's something new for me and you deserved a "uselful" with this short blog :))

November 19, 2012


Thanks for the suggest....

November 17, 2012


I found out the same thing from Lee Varis, and quickly got a modern digital one that worked for white balance as well: My blog on WB cards

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Photo credits: Aigarsr, Hamsterman.