Levels Adjustment allows you to adjust the lightness, darkness, and shading of colors in illustrations and photos. It is useful, for example, for matching the color tone of a character in an illustration to that of the background, or for adjusting the color tone of photographic material. As an example, we will adjust the color tone of a photo with weak contrast and yellowish color cast.
Levels Adjustment is a filter available only to prime members. For more information on Prime Membership, please see Prime Membership / Remove Ads Add-on.
Open the ①Tool Select window and select ②Filter.
Tap ①Adjust Color and then select ②Levels Adjustment.
The histogram graphically displays the respective amount of red, green, and blue pixels according to their brightness level. Higher peaks indicate that there are more pixels of that specific brightness.
First, apply ①Auto to make rough adjustments.
The automatic correction has caused the photo to appear darker. Adjust the ①Midtones Slider within the Input Levels (Left: Shadows, Centre: Midtones, Right: Highlights) so that the photo becomes a little brighter.
Next we will adjust the color cast. Switch to the ①Blue channel. By switching the channel to either red, green, or blue, you can solely adjust the channel of a specific color. Now adjust the ②Input Levels of blue to get a more natural color tone. When the adjustment is complete, tap ③✓.
And we’re done. By increasing the contrast and lowering the color cast, we’ve created a more natural-looking photo.