I don't use PCB, but recall Paul's demo of the 11" Long Throw against a house at night. It's described officially as having a "tight 28° beam spread". The equivalent Profoto reflector is the 13" Narrow Beam. Both have a polished surface, and keep the beam narrow. As such, they're best for bounce applications and long distance, not for close-in work. The 13" Magnum has a pebbled finish for a broad, smooth distribution: good for direct illumination at short distances.
