Grey Card app for iPhone and iPad
4.9 (
1389 ratings )
Travel
Photo & Video
Developer: simmogl
0.99 USD
Current version: 1, last update: 7 years agoFirst release : 16 Jul 2010
App size: 40.42 Kb
To use the Grey Card app simply take a picture of the app in the same lighting your subject is (or was) in. Then you can either use the resulting picture as the basis for a custom white balance setting, or you can use the Grey Card picture during post processing for a custom white balance.