- Shadow.jpg (65.5 KiB) Viewed 1432 times
We may need to know more about your specific image file (or perhaps you can link to an example).
It is my understanding that we can do two basic types of shadows: 2D and 3D.
I will talk about the 2D shadow because it's the easiest and may suffice in many situations.
For more realism and when compositing with other imagery a 'real' 3D shadow (or multiple shadows generated from multiple lights) might be more appropriate.
You will need:
the input image
a background for the shadow to appear upon
a shadow node
a merge node to composite the two together
The initial shadow may appear hidden directly behind the object so... move it down and in the desired direction. Because the default is a hard shadow you'll likely want to soften it via the Softness slider.