> Mike wrote: > The SB-28 owner's manual is insufficiently detailed or clear to me to answer > the question of what exposure meter method to use when the unit is used with > a remore slave unit. Here's the setup: N70, Nikon "D" lenses, SB-28 mounted > on a SU-4 and positioned closer to the subject than the camera. The > triggering or "master" unit is the N70's onboard popup flash. With the > camera set on matrix metering, and let's say Program Mode, should the slaved > SB-28 be used in TTL or Automatic? I believe the answer is Auto since the > lens and the slaved SB-28 are at differing distances from the subject, but > I'm not sure. Any advice would be appreciated. Assuming it works the same way as the Ikelite unit, you set the flash to TTL since in that mode it will follow the on camera flash. If you set it to Auto it will fire with the on-camera flash, but switch off using its own sensor which is not why you use the SU-4. The Flash on the SU-4 needs to be in TTL mode to get both the switch on and switch off signals from the SU-4. IN this way the TTL sensor in the camera controls both flashes. Alex
