This is a bit off-topic, it is more general that applying a mask.
For those of you with a gmic plugin, in the Color Presets section there are hundreds of pre-made look up tables (LUT). You can select a pack and scroll through the presets. Also the first entry is to render a collage for a comparison of the effects. Something for eveyone.
For those of you with a gmic plugin, in the Color Presets section there are hundreds of pre-made look up tables (LUT). You can select a pack and scroll through the presets. Also the first entry is to render a collage for a comparison of the effects. Something for eveyone.