Page 59 - Adobe Photoshop 2021
P. 59

16.  Expand the Output Settings in the Properties panel and
                 choose the Layer Mask option in the Output To menu.
                 You might need to scroll down in the Properties panel to find the
                 Output menu, or you can collapse the Edge Detection and Global
                 Refinements sections to show those options without scrolling.
                 This menu can be used to create a new layer or file (with or
                 without a mask) from the selection. You want to mask the existing
                 layer, so you are using the Layer Mask option.                            Note:

             17.  Click OK to accept your refined selection.                               Decontaminate
                                                                                           Colors can be checked
                 When you pasted the feathered selection from the original Lightning.jpg file, you
                 pasted only the pixels inside the selection area; unselected pixels from the original   to remove a certain
                 image are not a part of the composite file.                               percentage of color from
                                                                                           the edge of a selection.
                 Rather than actually excluding or deleting pixels, a layer mask hides unwanted pixels.
                 The mask you just created is a raster-based pixel mask. Unselected (masked) areas are
                 hidden but not deleted, so you can later edit the mask to change the visible part of
                 the image. This is a non-destructive way to hide certain elements of a layer without   Note:
                 permanently deleting pixels. You can edit or disable the layer mask at any time.
                                                                                           A layer mask is basically
                                                                                           an Alpha channel that
                                                                                           is connected to a specific
                                                                                           layer.



                                                                         The resulting layer
                                                                         mask hides areas that
                                                                         were not selected.





             18.  Control/right-click the mask thumbnail and choose Disable Layer Mask
                 from the contextual menu.
                 When you disable the mask, the background pixels are again visible. This is one advan-
                 tage of using masks — masked pixels are not removed, they are simply hidden.








                                                                                                When the mask is
                                                                                                disabled, masked
                                                                                                pixels are visible.

                                                                                                A red X indicates
                                                                                                that the mask is
                                                                                                disabled.


                  Control/right-click the
                  thumbnail to open the
                  mask’s contextual menu.



                                                                              Project 1: Music CD Artwork  71
   54   55   56   57   58   59   60   61   62   63   64