Nikon SB 800 Instruction Manual - Page 79

Be sure to cancel Monitor Preflashes

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Advanced operations ■■■ 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, SB-50DX, SB-28, SB-28DX, SB-27, SB-26, SB-25 • Set the flash mode to Standard TTL flash. • Tilt the flash head up. • Use a non-CPU lens. Built-in Speedlight (F80-Series/N80-Series, F75-Series/ N75-Series, F70-Series/N70) • Set the exposure mode to M (Manual). • Cancel the master flash unit's Monitor Preflashes setting when performing SU-4 type wireless multiple flash operation using the SB-600 as a master flash unit. For details, refer to instruction manuals provided with the Wireless Slave Flash Controller SU-4 and Speedlights (such as SB-800) featuring SU-4 type multiple flash operation. 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. 73

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73
■
■
■
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)
•
Cancel the master flash unit’s Monitor Preflashes setting when performing SU-4 type
wireless multiple flash operation using the SB-600 as a master flash unit. For details,
refer to instruction manuals provided with the Wireless Slave Flash Controller SU-4 and
Speedlights (such as SB-800) featuring SU-4 type multiple flash operation.
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 = 1
2
: 2
2
= 1 : 4 (in meters) or 3.3
2
: 6.6
2
= 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