Vivitar Horizontal and Vertical SLR Flash Bracket Center your camera on the bracket and attach, like you were mounting your camera on a tripod. The bracket comes with a universal shoe mount. Loosen the clamping screw shoe, slide flash into mount and tighten snugly. Connect flash to camera with appropriate PC or type-specific connecting cord. For horizontal shooting, the flash arm stays in the down position. The separation between your lens and the flash eliminates red-eye and softens shadow. For vertical format, rotate the flash arm 180. The flash will be repositioned to again be centered high above the lens.