Profoto 250 W Spezifikationen PDF herunterladen (Seite 4)

When the light setup is created, the power ratio can be

individually controlled for each lamp head by using any of

the four separate power controls. For adjusting the total

exposure after the correct ratio is set, all channels (power

settings) on the generator can be changed simultaneously

by holding down the master button and turning any one of

the lamp head controls in use.

Making Overall Output Changes Fast and Easy

The individual LED displays for each channel can be set by

the user to display the ﬂash power in Ws or in relative f-stops

and always show the real output. In the Ws mode, the display

indicates the actual watt second output for each individual

head. If you prefer, output can be expressed in f-stops, with

100% power being equal to 10 on the scale. With the reduction

of one f-stop in power, the display reads 9. Likewise, a 1/10

f-stop increase would read 9.1 and so on. And thanks to the

microprocessor-controlled output, you can be sure that each

head will produce exactly the amount of light you want each

and every time.

Perfect Performance

Short ﬂash duration and fast recycling are inherent in the design

of a Profoto generator. The D4 2400 offers ﬂash durations from

1/4500 to 1/600 sec. and recycling times from 0.09 to 2.20 sec.

The D4 4800 has a ﬂash duration from 1/2700 to 1/350 sec and

recycling time from 0.12 to 4.40 sec. In addition, from ﬂash to

ﬂash and over the entire power range, no shifts of the colour

temperature or f-stop will occur – even if four heads are used.

This guarantees accurate, consistent results for all analogue

and digital shots.

In the range of 90-240 V/50-60 Hz, the D4 generators will

automatically adjust themselves to the mains voltage; only

the modeling lamps need replacing.

Thanks to the 4 independent outputs, many jobs can be done

with just one generator – a comfortable solution for the

“pro-on-the-go”. No matter what and where you shoot, with

a Profoto D4 you’ll always have the ideal tool. And because of

their solid construction and the use of high quality com ponents,

these packs are real workhorses, something you can trust in.

Profoto D4’s are true all-around generators.

Imaging today requires consistency in output and colour

whether shooting ﬁlm or digital. Profoto’s unique “Hybrid Flash

Technology” ensures repeatable performance from exposure

to exposure over the life of the generator.

This is made possible through the use of advanced electronics

and microprocessors, combined with the time-proven approach

that has made Profoto the industry leader in electronic ﬂash

systems.

Profoto D4 Generators; 1200, 2400 and 4800 Ws

This new ﬂash generator from Profoto is the perfect

combination of digital precision and versatility with analogue

control and reliability. This gives you the immense possibilities

of computer technology and the logical handling of a classic

instrument. D4 generators grow with your demands. They are

suited to all kinds of sophisticated photography such as still life,

interior, people and product shots.

Advanced Functions

In producing the next generation of ﬂash, design goals were

set to give the pack a look and feel of the sophisticated, precise

working tool it was conceived to be. From its sleek and ergo-

nomic shape to its responsive controls, the Profoto D4 offers

microprocessor regulation for consistent output, whether you

work from the pack or control it from your computer. Even

though D4 generators offer the most advanced functions, they

are easy to use and almost self explanatory.

Full Direct Control

Designed from the ground up with the commercial

photographer in mind, the all-new, digital Profoto D4 ﬂash

generators set the standard for consistency and control. The

four channel asymmetric system allows direct control of each

lamp head. Each head is controlled by a separate knob with a

corresponding high contrast LED panel. Simply working with one

D4 generator is effectively

the same as using four independent ﬂash units.

By rotating the knob, 1/10 f-stop adjustments are made. If the

knob is pressed down while rotating, full f-stop adjustments

give the photographer unsurpassed control over an eight f-stop

range. In addition, the energy can be asymmetrically distributed

over a broad range.

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Profoto 250 W Spezifikationen Seite 4

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