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[] MASTER YOUR DSLR: RADIO-CONTROLLED FLASHOPTICAL VS RADIO
Both systems fire remote ‘slave’ flashguns wirelessly but in very different ways...OPTICAL WIRELESS CONTROLRADIO WIRELESS CONTROL01 FLASH PLACEMENT
The IR sensor on a slave
flashgun has to be able to see the
beam from the master unit, whether
that’s directly or indirectly (such as if it
bounces off a wall or ceiling).02 FLEXIBLE HEAD
Many flashguns allow
you to rotate the head, so you can aim
the light at the subject while continuing
to point the IR sensor at the master.01 FREEDOM!
As radio
control doesn’t
require line of sight
between the
transmitter and the
receiver, you can
place flashguns
inside sealed
modifiers and
behind objects.04 MASTER UNIT
You can use a compatible
radio flashgun ‘master’ to control
the slaves, but a transmitter unit
is smaller and lighter.03 FLASHGUN CONTROL
You can use a flashgun or a transmitter, but a transmitter
will need to be able to fire the optical beam to set off the other
flashes, and this can restrict the position where you shoot from.02 DISTANCE
Radio control works over a
greater distance than an optically
controlled system, so you can use
longer lenses or stand further
from the remote units.04 MODIFIERS
You’ll have to choose modifiers that enable the
IR beam to reach a slave flashgun, such as a softbox
that allows the flashgun to be mounted externally.03 GROUPS
You can use a single
slave unit or multiple ones,
and assign these to groups,
then adjust the power of each
group separately.0101020203030404