Imports an image file as a new image layer or mask layer, on an existing canvas, or on a new canvas.
Image – Imports the image as an image layer.
Mask(Luminance) – Imports the image as a mask layer, using the image’s luminance values as a mask.
Mask(Transparency) – Imports the image as a mask layer, using the image’s transparency (that is, its alpha channel) as a mask.
If this option is checked on, the layer is imported into a new canvas created in the active window. If it is checked off, the import operation behaves as follows: