What's the difference between AI Preset Masks and Lightroom Brushes?
AI Presets for Lightroom can be applied on top of any preset that you use for your gallery and use AI Masking Technology to apply selective edits to different parts of the image. For example, the Skin Smoothing preset will automatically detect all skin areas in the image and apply the mask only to the skin with just one click. A Lightroom brush will allow you to control the selective editing yourself on each image by brushing the mask directly onto the image in the areas you'd like to have it placed. AI Masking will make your workflow significantly faster, but I still hand edit areas of each image with Lightroom brushes to create a final, polished look. So in reality, I use both on every image!