28th August 2004, 10:55 PM
RGB value of a Grey Card
Anyone know what is the RGB value of a grey card under correct exposure? I am testing to see whether i can use this to set my midtone in my images.
30th August 2004, 09:08 AM
You can set 128 for all three of them.
1st September 2004, 08:52 AM
Originally Posted by xplorer2
hehehe..that is simple...just half of the 255 value. But if we are talking about 18% grey, does that also mean 0.18 of the 255 value?
19th September 2004, 08:58 PM
Btw, can I just check where to get the Grey card? Any photo shops will do? ie. Cathay Photo?
I have a grey card but the corners are peeling badly...thanks.
20th September 2004, 12:34 AM
Yep you can get in for $25 at Cathay Photo.
20th September 2004, 12:38 AM
Ruby have one that is more portable. but more expensive. it open and can be kept like a reflector. they just bring in from england.
25th September 2004, 09:17 PM
Btw, where/who is Ruby? Pardon my ignorance.
25th September 2004, 10:30 PM