Learn how to create a color range mask and quickly replace a sky inside ON1 Photo RAW 2019. Masking out your sky is easier than ever with the ability to mask and blend inside ON1 Photo RAW. We will add a Textures filter to bring in our sky element. Then we will mask out our sky by using a color range mask. This will use color as a guide and will automatically mask out your filter from areas you don’t want it. After adding a couple more filters to stylize and bring in a few more elements, we will finish with a local adjustment layer.