We commonly used blend modes to have an effect on a layer and below it. We can use blend modes with color channels as well as individual RGB effects on the image to yield different color effects.
Step one: Start by opening an image in Photoshop by pressing CTRL + O in Windows or COMMAND + O in Mac – or navigate to file menu -> Open.
Step two: Once our image is now open in Photoshop, and in order to apply the blend modes, we need to create a duplicate layer of the image. Right click on the background layer and select duplicate layer (shortcut = press CTRL+j or Command+j which opens a pop up window.
You can either rename the duplicate background layer or not; click Ok. This creates a duplicate layer, as seen in the layers panel.
Step three: Now we’ll change the blend mode by clicking the layers panel window. Right click the background copy, then select blending options (modes).
We can change these blending modes at any time by navigating back to the layer’s blend settings. Try Normal blend mode for the moment.
To check on the color channel we usually go to channel panel (on right side) beside the layers path. At first we see all our image channels are selected but the moment we click on the Red, or Green or Blue channel the image will start to change.
Now return the image to its normal state by clicking the RGB channel.
With the blue channel selected only, we can see a difference. Return to the current image back by clicking on all the RGB channels.
Step four: At top, click the image menu, then apply image.
Step five: When you select OK [in the apply image popup window], Photoshop will apply the effect(s) and filter(s) set. We can also combine blending options with color channels.
Continue experimenting by adding more layers and color enhancing effects. If you have any questions you can leave a comment below!