Most likely every time anyone edit an image with Adobe Photoshop will use selection for different reasons and purposes. Not that Photoshop don’t have a wide range of selection tools available, but there are times when they are just not enough. Many times you can use a Polygonal Lasso or Magic Wand or Quick Selection Tool, but what do you do when you need to isolate a person, a tree or something like that? How do you select the space between branches, leafs or hair? Lucky for us, there is a way to do it without too much hassle and I’m going to show you how.
What we want to od is to isolate this lady and put it on a different background, maybe for a magazine, poster or whatever purpose. When we cannot use the traditional selection tools, we need to take a look at the Channels. What we look for is the channel that have the most contrast. In 99% of the cases that channel will be the Blue, but you may never know so make sure you scroll through each of them and pick the right one. Now that we found our channel, we duplicate it.