INTRODUCTION The Nikon®  flash system is a wonderful tool. Notwithstanding, new users seem disconcerted with the names, descriptions and instructions to use it, not to mention how to use it well. Most feel a visual demonstration is imperative, so here it is. F100 with SB-28 on hot shoe at left. Second SB-28 on SU-4 at right. All tests were performed with a Nikon F100 camera on a sturdy tripod with a pro ballhead, SB-28 speedlights, AF-S 28-70mm f/2.8D ED Zoom Nikkor with 81A filter from 8.8 feet (2.7 meters) at 70mm focal length, shot on Fujichrome Provia 100F Professional (RDPIII). ... Last modified on Friday, 10 May 2013