You need mask for complicated selections. If you have a bunch of objects in composition, you could use mask for faster and more productive work.
Mask will be saved as Alpha channel in CHANNELS panel (Window > Channels).
To create an alpha mask for an image in Photoshop, you can use the "Channels" panel to select the channel with the most contrast between the subject and background. Then, you can refine the selection using tools like "Levels" or "Curves" to create a clear black and white mask. Finally, you can load this mask as a selection and apply it to your image for a precise cutout effect.
To create a color mask in Photoshop, you can use the "Select" menu and choose "Color Range." Then, select the color you want to mask by clicking on it in the image. Adjust the settings to refine the selection, and then click "OK." This will create a selection based on the color you chose, which you can then use to create a mask on your image.
Dialog in which you can improve selection actually layer mask and remove all selection or layer mask imperfections using several commands like feather,smooth, contrarst..
To mask an image in Photoshop, you can use the selection tools to outline the area you want to keep visible, then create a layer mask to hide the rest of the image. This allows you to easily edit and manipulate specific parts of the image without affecting the rest.
To copy a mask in Photoshop, you can right-click on the mask thumbnail in the Layers panel and choose "Duplicate Layer" or "Duplicate Mask." This will create a copy of the mask that you can then apply to another layer or make adjustments to.
To isolate a color in Photoshop, you can use the "Select" menu and choose "Color Range." Then, click on the color you want to isolate in the image. Adjust the settings to refine the selection, and then use a layer mask or a new layer to isolate the color.
With selection tools available in Photoshop like: Lassso tools, Magic Wand, Quick selection. With selected pixels you can do whatever you want: delete them, change or mask or create new layer from selected pixels.
Photoshop have Horizontal Type Tool and Horizontal Type Mask Tool which you can use to type text in Photoshop.
Softening, you can soften edges of selection using Feather command from select > Modify > Feather or From Refine Edge dialog Select > Refine Edge. Feather also appears on Properties panel in Photoshop CS6 or Masks panel in previous versions to soften edges of pixel based or vector mask (you must select mask on Layers panel first).
To add a layer mask in Photoshop, first select the layer you want to add the mask to. Then, click on the "Add Layer Mask" button at the bottom of the Layers panel. This will create a white layer mask next to your selected layer. You can then use the brush tool to paint on the mask with black to hide parts of the layer, or with white to reveal them.
To create a new layer mask from a saved selection, first load the selection by going to the "Select" menu and choosing "Load Selection." Then, click on the layer you want to add the mask to and click the "Add Layer Mask" button at the bottom of the Layers panel.