is a curated collection of pre-made "Slide Styles". These are more than just filters; they are complex, multi-layered animations that dictate how your photos and videos behave on a single slide. : Different volumes offer specific themes, such as the Senior Style for graduations or high-energy montages like from StylePack 3.
The specific "Plus" pack is famous for its optical bloom. When transitioning from a dark image to a light image, the Effect Plus transition often inserts a micro-flare—a subtle flash that covers the seam between slides. This tricks the human eye into seeing a seamless, continuous video rather than a slideshow of stills. Proshow StylePack Effect Plus Transition
For best results, set transition duration to 2.5 seconds and enable “Smooth motion” in ProShow’s settings. ProShow StylePack: Effect Plus Transition 3