Nikon SB-800 Be sure to cancel Monitor Preflashes in TTL multiple flash operation

■■■ Be sure to cancel Monitor Preflashes (in TTL multiple flash operation)

In SU-4 type wireless multiple flash and multiple flash using cords, cancel the Monitor Preflashes of the master flash unit following one of the methods described below, since Monitor Preflashes cause incorrect exposure.

SB-800	•	Set the SU-4 type wireless multiple flash
		mode
SB-80DX, SB-50DX	•	Set the wireless flash mode.
SB-800, SB-600, SB-80DX,	•	Set the flash mode to Standard TTL flash.
SB-50DX, SB-28, SB-28DX,	•	Tilt the flash head up.
SB-27, SB-26, SB-25	• Use a non-CPU lens.
Built-in Speedlight	•	Set the exposure mode to M (Manual).
(F80-Series/N80-Series, F75-Series/
N75-Series, F70-Series/N70)

v Notes on performing multiple flash (common to both wireless and wired operation)

•To avoid accidental firing, turn off the camera and all flash units before mounting the master flash unit on or connecting it to the camera.

•When using a Speedlight that has a standby function as a remote flash unit, make sure that the standby function is set to off, or select a standby duration that is long enough, using the Custom settings.

•The SB-800’s and SB-80DX’s standby function is canceled while the SB-50DX’s standby duration is prolonged to approx. one hour when they are set to the wireless remote flash mode.

•Set the angle of coverage of the remote flash units wider than the picture angle, so that the subject will receive sufficient illumination even when the angle of the flash head is off axis from the subject. (In Advanced Wireless Lighting, the zoom-head position is automatically set to 24mm, except when the built-in wide-flash adapter or Nikon Diffusion Dome is attached.) Remember, the closer the subject, the wider the angle of coverage required.

•The brightness of the flash illumination is inversely proportional to the square of the distance between the flash unit and the subject. For example, if the distance between Speedlight A and the subject is 1m (3.3 ft.), and Speedlight B is 2m (6.6 ft.), the combined brightness of the two Speedlights will be:

A : B = 12 : 22 = 1 : 4 (in meters) or 3.32 : 6.62 = approx. 11 : 44 (in feet)

Therefore, the illumination provided by Speedlight A is four times (or two steps) brighter than that provided by Speedlight B.

•To ensure good results, it’s recommended to make test shots before shooting important events.

•Be sure to read the instruction manuals of your camera and Speedlight(s) before use.

Advanced operations

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