SU-4 type wireless multiple flash shooting
tAdjusting the flash output level of the remote flash units in the w(manual) mode.
Adjusting the flash output level manually
Use the following equation to determine the proper manual flash output level of the remote flash unit, depending on your creative preferences.
GN = F x D
where GN is the guide number of the remote flash unit (in meters/feet), F is the lens aperture in use, and D is the distance between the remote flash unit and the subject (in meters/feet).
For example, with the
GN (in meters)= 4 x 2 = 8
GN (in feet)= 4 x 6.6 = approx. 26
Therefore, to get the correct exposure, refer to the Guide Number table (p. 42) and adjust the flash output level to M1/16.
•Refer to “Determining the aperture and flash output level in the Manual mode” (p. 42).
Adjusting the flash output level in
1 Set the same ISO sensitivity on the remote flash unit as set on your camera.
2 Set the same aperture on both the lens and the remote flash unit to obtain the correct exposure.
•Depending on your creative preferences, you can intentionally overexpose or underexpose the picture by modifying the aperture.
•The above setting is applicable ONLY when both the master and remote flash units are pointed in the same direction.
•Refer to “Setting apertures in
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