In this video, you will learn how to take advantage of the powerful Local tab in ON1 Photo RAW 2019. Local adjustments can be used to apply a gradient filter to darken a sky, for example, or to add a more complicated vignette to an image. Local adjustments are in essence a mask that is applied to a portion of your image, and you can manipulate those masks in powerful ways with both the blending modes and the luminosity options in the Local tabs. You can apply these adjustments using either the Adjustment Brush or the Adjustable Gradient (or both, if desired).
Using Local Adjustments