Zacuto Z-Finder 3" Mounting Frame for Small DSLR BodiesThe Zacuto Z Finder Mounting Frame for Small DSLR Bodies is required when mounting a Z Finder to the 3" LCD screens of small body cameras, such as the Canon 5D Mark II, 7D, and Nikon D90. The frame (which comes standard with the Z Finder Pro) attaches to the required Gorilla Plate using two thumb screws; then, with the frame's rubber edges pressing snugly against the LCD screen, the Z Finder can snap quickly into the frame and be just as easily