Panasonic DMWFL360E - Manual (Page 31)

31
VQT1B11
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How to determine the guide
number, the aperture and the
optimum camera to subject
distance
When the camera to subject
distance and aperture have been
decided upon
≥ The following formula is used to
obtain the guide number (GN),
which is then set in the unit.
“Aperture (F)” k “Camera to subject
distance (m)” m “ISO sensitivity
coefficient
¢
”
When the aperture is to be set
≥ The following formula is used to
obtain the aperture, which is then
set in the digital camera.
“Guide number (GN)” k “ISO
sensitivity coefficient
¢
” m “Camera to
subject distance (m)”
How to obtain the optimum
camera to subject distance
“Guide number (GN)”
k “ISO
sensitivity coefficient
¢
” m “Aperture
(F)”
¢ ISO sensitivity coefficient
≥ For a list of guide numbers (GN),
turn to P41.
ISO sensitivity
Compensation
coefficient
3200 5.6
1600 4.0
800 2.8
400 2.0
200 1.4
100 1.0
50 0.71
25 0.5
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