This is complete rubbish. It arrived full of chips in a styrofoam garbage bag. They are of very poor quality and not even worth the low price.
Pros
A good gift for photography lovers. Prism photography is a fun way to add creative effects to your photos. From rainbow-effect colors to dreamy looks and reflections, prisms' ability to refract light produces amazing results. You can even use it to remove unwanted elements from your photo.