The body of the Pocket Wizard AC7 shield is made with a material that effectively blocks RF interference (EMI) from clouding the FlexTT5 antenna. To block noise traveling through connections in the hot shoe, an electronic filter has been added to a hot shoe built into the AC7. With two ¼-20 mounting points, the AC7 can be mounted both vertically and horizontally on light stands, clamps, brackets or simply handheld. The back of the flash remains open for complete access to the LCD and flash controls and there is access to the remote power port. The flash head can be rotated when using the AC7 shield due to a small cut-away in the side of the shield. When used with an umbrella, the AC7's lay-flat design places the flash more in the center of the umbrella than usual and produces a symmetrical light shape for incredibly even light dispersion. Most of the popular diffusers, grids, snoots and reflectors can still be used with the AC7 shield in place. It will also offer additional protection for the TT5 unit.