34
allows you to use a wider aperture
to achieve shallower depth of f ield
while maintaining correct
exposure.
11.2.1 Characteristics of HSS Flash
Compared with normal single-burst
flash, the
HSS flash provides
continuous and constant illumination
for the full duration between the
f
irst curtain opening and second
curtain closing.
The contribution of
HSS flash to the exposure of the image
is therefore different than that of a
normal flash:
1. The output power of the HSS
flash f
ired by the RF60X is
different from that of a normal
flash. To compensate 1EV exposure
loss in your camera setting, you
need to increase the power level
of a HSS flash by 2EVs. Check the
GN table below for comparison: