Optical Viewfinder: The GV-3 provides an optical viewfinder solution for photographers who prefer using a traditional viewfinder rather than composing images using the camera's LCD screen Compatibility: The GV-3 External Viewfinder is specifically designed to be compatible with Ricoh digital cameras, including models such as the Ricoh GR III, GR II, and other similar cameras. Compact and Lightweight: The GV-3 is designed to be compact and lightweight, complementing the portable nature of Ricoh's GR series cameras. It adds minimal bulk to the camera setup while providing the benefits of an optical viewfinder.