Layer masking is an essential tool of Photoshop. It is very handy in many ways:
- You can use layer masking to any layers, groups or smart objects.
- You can use it when erasing parts of the layer then you can turn it off or delete the layer mask on an object if you want to remove the effect that easily.
- Layer masking can also preserve the original pixel of a layer by using it.
- You can also use gradient on layer mask to create a perfect straight fading effect without hassle.