In this beginner tutorial, I will show you how to animate an image reveal.
This method will also work for animating material changes.
This guide will show you step by step how to set up your materials and add the keyframes for the animation.
Timestamps:
0:00 The end goal
0:07 Adding a plane for the image
0:20 Activating the addon Node Wrangler
0:30 Creating the image material
0:50 Setting up the starting material before the reveal
1:22 Creating the setup for controlling the factor and the reveal
2:30 Adding a window for the timeline
2:37 Animating the ColorRamp for the reveal using keyframes (shortcut: I)
3:35 Adding some life and movement to the reveal animation