This effect allows you to create different types of image brightness transitions in the sequence.
Time lapse software allows you to choose how the brightness of the sequence will change over time.
The option chosen for the Brightness Transition shown above is Fade Out. The image below illustrates this transition.
Note: You can add a precise value for the slider. Just double-click on the percentage number to open up the percentage editor.
Note: this effect is available in the free version of Time-Lapse Tool.