by Julieanne Kost
Well, not exactly, however, when using the Adjustment Brush in the Develop module in Lightroom, tapping the “O” key (for Overlay) displays the mask while painting. Tap “O” again to hide the mask. To change the color of the mask, add the Shift key and tap “O”. While I know that this is not exactly Quick Mask, it does allow you to view the mask that you’re painting in Lightroom.