Photoshop detailed analysis of post-light and light effects-PS tutorial

Shadow is very important for any image processing, because it is always inseparable from the light. if the shadow is used correctly, you can get amazing results. Shadow is very important for any image processing, because it is always inseparable from the light. if the shadow is used correctly, you can get amazing results. In this tutorial, I will show you some clever ways to use photoshop to create realistic shadows and lights.
The first step is theory to help you understand how lights and shadows work. in the subsequent steps, I will show you how to create shadows.
1) angle of light source and shadow.
Before you start to process the image, make sure that you do not need a shadow. To clear your mind, you must first determine the main light source.
As you can see, the light source of the original image is in the upper left corner. in the synthesized image, the upper left corner of the sky and the cloud is also illuminated. you should always respect the direction of light.
You must determine which elements in the image will affect your processing of lights and shadows. (Wb: pay attention to which elements in the image will become the light source .)
The above is all about shadow and lighting. I hope you can learn something from it. However, you have to try and practice more on your own.