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Untitled Document

Akurat

S4 Bi - Studio Kit

Eclairage à led SMD - de 3100 à 5650K° - Secteur

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Akurat S4 Bi - Studio Kit
Eclairage à led SMD - de 3100 à 5650K° - Secteur
S4BI-STUDIO-KIT
449 € H.T
  • Descriptif
  • Caractéristiques techniques
  • Vidéos & Photos
  • Accessoires fournis

State-of-the-art high-CRI multiluminophore LEDs and a modern microprocessor-based controller allow the device to emit a strong and high-quality luminous flux that is completely free from the flickering effect. Replaceability of optics enables to modify the light’s photometric properties within a wide range.

Akurat S4 allows to adjust light output practically without affecting colour temperature. It is a tool perfect for use both in outdoor filming locations and in the studio. The optional DMX512 controller enables to control the light remotely in television studios or when the light is hard to reach.

Lenses
S4 is equipped with 4 sets of TIR lenses as standard. Replaceability of lenses allows the user to adapt the parameters of a particular device to his or her current needs. Thus it is possible to illuminate wide frames from a small distance as well as to achieve high lighting intensity with low power consumption.
There are three types of lenses available, differing in terms of angle: 30, 60 and 90 degrees. With lenses removed, the light emits a 120-degree light beam. The table below shows the photometric properties of individual S4 models configured with different optics.

Control panel and user memory in S4bi
In the back of S4 there is a control panel consisting of buttons for device operation, a display for indicating current per cent brightness setting and current colour temperature expressed in kelvins (only in S4bi), diodes signalling the operation mode, battery seats (optional) and mains power supply socket. Controllers of S4bi lights have a non-volatile memory for three panel presets that include brightness and colour temperature settings. Calling the presets from individual memory units is done by pressing the related memory buttons; storing a preset requires holding the chosen button pressed for a while. Indicators found next to the buttons signal the use of memory.

Battery operation
The unique functionality of Akurat S4 comes from the multitude of battery supply options. The light can be powered using small, common and inexpensive 7.4 V camera batteries offered by various manufacturers. The device requires two batteries of that type, and such a supply allows it to operate at full power for up to 180 minutes (S4bi) or 90 minutes (S4t and S4d). There are also adapters available for powering the light from 14.4 V batteries with a V-Mount or a Gold Mount bracket. The controller of the device is equipped with a battery state tester. Current battery voltage is indicated with an accuracy of 0.1 V. The device signals low battery by flashing indicators.

Fixing
S4 is equipped with a fixing yoke made from aluminium profiles. The yoke enables to orientate the light in two axes. The light can be fixed in the vertical axis with convenient adjustable levers, while fixing to a tripod or in the horizontal axis is done by means of a standard female 5/8” adapter. One accessory useful for tripod mounting is an adjustable head that enables to position the yoke at any angle. It is also possible to equip the head with a diffuser umbrella.

Key features of S4 lights

  • Photometric properties of the light can be modified by replacing optics
  • No flickering effect, suitable for illuminating locations and sets filmed in slow motion at any frame rate
  • Stepless colour temperature adjustment capability as well as switching between standard daylight and tungsten colour temperature settings (only in S4bi)
  • Freely adjustable brightness (0–100%)
  • DMX512 signal control capability (option)
  • Several indications: current colour temperature in K (only in S4bi), per cent brightness, battery voltage
  • Non-volatile user settings memory (only in S4bi)
  • Can be powered by common and inexpensive NP-F batteries or other camera batteries, including those of the V-Lock type
  • High efficiency and low operating temperature
  • Aluminium housing
  • Highly robust, resistant to shocks and moisture
  • Dependability
  • Long service life
  • Intuitive operation

Photometric specification
Corelated Color Temperature3100/5650 K adjusted in increments of 50 Kelvin
Color Rendering Index CRIRa>90 typ.95
Electrical specification
nominal voltageRa>13-16 V DC
power35W
maximal voltage18V
minimal voltage12V
Mechanical specification
amount of light sources (LEDs)132 PCS middle power SMD
width312 mm
depth (without the driver)30 mm
width (with fixing levers)420 mm
type of mounting5/8F
key material of bodyAluminum
Weight1.5kg
weight incl. yoke and mount1.9kg
Environmental specification
operating ambient temperature-10°C to +40°C
storage ambient temperature-40°C to +80°C
max ambient temperature85%
Other
durability of LEDs50 000h


LENS306090120306090120
S4 TypeDistance (metre)DaylightTungsten
Illuminance (LX)
S4 Bi 0.613 6305 0302 7352 35012 0704 3002 4712 050
16 6152 0701 0589075 8551 780931790
1.24 9091 4707466404 4151 274659556
1.82 4256953473032 174595304258
2.41 4144042041801 285345179153
3927267140123838230121105
453616084734871397264
S4 Daylightas Above x2
S4 Tungstenas Above x2
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