Camera Shutter Transition
Two versions included. Super simple. There are no parameters. Audio sound effect included within the Media folders of the transitions. Video below demonstrates how to add the sound effects.
Originally created for Final Cut Pro 7, updated and modified for FCPX. The original version is compatible with FCPX 10.0 or higher. Version 2 is compatible with FCPX 10.1.3 or higher.