Keyframes act as "checkpoints" for an object's properties. By setting different values at two or more points on the slide's timeline, the software automatically creates a smooth transition (interpolation) between them. Initial Keyframe: Defines the starting position, scale, and opacity. Subsequent Keyframes:
To make a photo fade in, set Keyframe 1 and Keyframe 2 to 100% . smartshow 3d key work
For a visual walkthrough of the keyframe animation process and advanced 3D features: Keyframes act as "checkpoints" for an object's properties