This is a simple effect; it adjusts the brightness of the entire image with the help of time lapse software.
Only the brightness parameter can be adjusted on this effect. Values in the range of 0-49 produce a darker image; values above 50 increase image brightness; value 50 for the setting does not affect the image.
Setting Brightness to 30 decreases the brightness of the original image significantly.
Note: this effect is available in the free version of Time-Lapse Tool.