The Joe McNally TriGrip Kit from Lastolite
offers you the tools to accomplish the type of on-location lighting for
which Joe McNally is so well-known. The TriGrip kit can be used as a
reflector or a diffuser--it features a 2-stop diffuser panel, a TriFlip
reflector sleeve and a window mask sleeve.
For a reflector, just slip the reflector sleeve over the diffuser
panel and select one of the four surfaces, according to the effect you
want: Silver, Sunfire, Sunlite, or Soft Silver. The second sleeve is all
black with a 21.25 x 15" (54 x 38 cm) cut-out window opening which
reveals the diffuser panel underneath, creating a rectangular
shoot-through panel for battery-operated flashguns. There are two
additional black panels with which you can control the light more
precisely by changing the size and shape of the window.