Energy Control; Modeling Light - Profoto D4 1200 Air User Manual

Energy control

The selected energy level for each head is shown in the Energy Displays A-D [10].
The energy level is by default displayed in f-stop scale. To show the energy level in Ws
scale, press the Ws/f-stop Button [11].
In f-stop scale, the maximal energy (100%) is shown as 10.0. In Ws scale, the maximal
energy (100%) is 4800 for D4 4800 Air, 2400 for D4 2400 Air and 1200 for D4 1200 Air.
The Energy Controls [13] are used to adjust the energy levels for the corresponding head:
• Turn the control clockwise to increase the energy in 1/10 f-stop increments and
counter-clockwise to decrease the energy.
• Press and hold down the control and turn the control clockwise to increase the energy
in 1 f-stop increments and counter-clockwise to decrease the energy.
• To adjust the energy level for all heads at the same time, press and hold down the
Master Button [14] and use the Energy Control [10] of any of the active heads.
A double beep indicates that the maximal energy level setting is reached.
Since the generator has auto dump functionality, there is no need to trigger a flash to
discharge the generator when the energy level is lowered.

Modeling light

The Head/Model Buttons A-D [12] are used to turn on/off the corresponding modeling light.
The Modeling Light Button [19] is used to turn on/off all the modeling lights at the same time.
The D4 Air generator has a soft start function of the modeling light, which extends the
lifetime of the halogen lamps. This means that the modeling lights start with a slight delay.
The Modeling Light Button [19] is used to select one of the following modeling light
alternatives:
• MAX: The modeling lamps will get maximal intensity, regardless of the energy level
settings of the heads.
• PROP: The intensity of the modeling lights will be proportional to the energy level
setting of the corresponding heads.
• MAX PROP: The modeling light for the head with the highest energy level setting will
get maximal intensity. The modeling light intensity for the rest of the heads will be
proportional to the energy level of the head with highest energy.
• ½ PROP: T he modeling light intensity will be proportional to half the energy level setting
of the heads. This is useful when mixing generators of different sizes. For example, a
D4 4800 Air shall be set to PROP and a D4 2400 Air to ½ PROP when used together.
The Modeling Light Indicators [20] show the current modeling light setting.
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