The Zacuto FS5 Z-Finder is specifically designed to suit the shape and size of the monitor included with the Sony FS5. The FS5 Z-Finder comes with a flip up frame designed to slide onto the FS5 LCD and lock securely in place. The Zacuto Z-Finder will pop on and off the frame for quick shooting. The red lever at the bottom of the frame allows you to quickly flip the Z-Finder up without removing it from the frame. If a producer/client/director etc. wants to see into the viewfinder, you can flip it open instead of having to adjust so they can get their eye to the loupe. You can also pop off the Z-Finder and use the FS5 LCD as a monitor.