Photo/IR-Cell, Auxiliary Functions, A - “I” for Interval

D4 Profoto D4 – Generators

is 100% charged to the chosen power level.To change the ready signal mode, hold down or push repeatedly the Ready Signal Button [17] until the desired function is visible at the

Ready Signal Indicators [16]:

1.BEEP – a short acoustic signal indicates that the generator is fully charged.

2.BUZZ – an intermitting signal is audible while the generator is charging.

3.BEEP & DIM – the modelling light is dimmed while charging and a short acoustic signal indicates that the generator is fully charged.

4.BUZZ & DIM – an intermitting signal is audible and the modelling light is dimmed while charging.

5.DIM – the modelling light is dimmed while charging. After 5. the functions return to 1.

PLEASE NOTE! To guard against wrong exposures, it is not possible to release a flash while the generator is charging. If you try, a long beep will indicate that no flash was released.

Photo/IR-Cell

If the Photo/IR-Cell On/Off Button [6] lights up, the built-in Photocell [5] will sense other flashes as well as IR-signals from most IR-transmitters. Activate or deactivate the photocell by pushing the Photo/IR-Cell On/Off Button [6].

Auxiliary Functions

The D4 series offers advanced functions like “Interval” for stroboscopic effects, “Sequence” for multi exposures or multi pops to increase the flash output, and “Delay” to create wipe effects or for pictures of fast moving objects made with an electronic release system.

By pressing and holding down the Auxiliary Functions Button [7] you enter the auxiliary mode and the Power Displays [10] will show the following functions:

A – “I” for Interval

Activate this function by pushing the corresponding Flash and Modelling Light Button [12] and

Profoto D4 – Generators D4

set the interval time now visible in the Power Display [10] from 0.1-60s. by turning the Power Dial [13] for outlet A. If you press down the dial while rotating, the interval time changes in bigger steps.

PLEASE NOTE! The interval function can be activated only if you also use the sequence function. If the generator can’t deliver the desired interval because of a longer recharging time, it will release the flashes as fast as possible and an long beep will indicate the improper use.

B – “S” for Sequence

Activate this function by pushing the corresponding Flash and Modelling Light Button [12] and set the sequence now visible in the Power Display [10] from 2-60 flashes by turning the Power Dial [13] for outlet B. If you press down the dial while rotating, the sequence changes in bigger steps.

C – “d” for Delay

Activate this function by pushing the corresponding Flash and Modelling Light Button [12] and set the delay time now visible in the Power Display [10] from 0.01-60s. by turning the Power Dial [13] for outlet C. If you press down the dial while rotating, the delay time changes in bigger steps.

PLEASE NOTE! Always check the optimal delay time by taking test exposures: All cameras have a different release delay and the effect depends on the speed and moving direction of the subject. The following list is a rough basis for your own tests to create wipe effects:

Wipe effect (Rear Curtain) Sync Time	Decimal Equivalent	Recommended Delay
1/1	1 second	0.98 seconds
1/2	0.5 seconds	0.49 seconds
1/4	0.25 seconds	0.24 seconds
1/8	0.125 seconds	0.12 seconds
1/15	0.0667 seconds	0.06 seconds
1/30	0.0333 seconds	0.03 seconds
1/60	0.0167 seconds	0.01 seconds

D – “r” for Radio

If the D4 is equipped with a radio slave receiver, you can activate this function by pushing the corresponding Flash and Modelling Light Button [12] and set the channel now visible in

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