The automatic or preset white balance is useful for normal situations. In case you would like to have a precise white balance or you are working in difficult light situations a user-defined white balance offers you much better results. In case you don’t work with RAW files, which can change white balance in post-processing, with OM-D cameras you could use the One Touch White Balance.
How to use the One Touch White Balance
1. Press the “OK” button to activate the Super Control Panel. Choose white balance and press “OK” again.
2. Choose a “Custom White Balance” and press the “INFO” button.
3. Shoot a neutral object (i.e. white sheet of paper or a gray card), which covers at least 75% of the image area.
4. As soon as you took the image the camera asks you whether you would like to save the white balance or not.
In case you need to have custom white balance often you could also program a button with the “one-touch white balance” function. This has the advantage that you could save the customized white balance by pressing the button only, without going through the menu.