The Z-Finder Jr. is one of Zacuto's Optical Viewfinders that allows DSLR cameras to have the correct form factor for video. It offers 2.5x focusable magnification, a 40mm diameter Zacuto optical designed lens, an eyecup preventing extraneous light leakage and a field of view perfectly matched to 3" LCD screens. The Z-Finder Jr. does not have a diopter instead it uses Z-Finder Extender Frames to adjust the focal point. The Z-Finder Jr's focal point is -2.75 and up (unlimited with extender frames).
The Z-Finder Jr. mounts to your camera via a supplied adhesive mounting frame that attaches to your camera's 3.0" LCD screen. This attachment method does not require the use of an additional base plate, and permits easy installation and removal of the finder from the camera. Once detached, the unit can hang conveniently around your neck using the included lanyard.