Alpha 4K Alpha 4K côté Alpha 4k sur tournage

Alpha 4K

In 2002, the Alpha 4K was the first Fresnel fixture designed by K5600, and the first Fresnel to offer an Open Face option. It was, and it’s still the smallest 4K Fresnel on the market : depth of the Alpha 4K is reduced by more than 30% compared to traditional Fresnel fixtures.

Essence of versatility

The Alpha 4K’s concept is to create a more compact and lighter fixture with interchangeable Fresnel lenses, giving the end user more options than just Flood and Spot. It offers great versatility from Open-Eye (86°) for extra wide beam with a single hard shadow, to precisely controlled Fresnel from 7° to 65° using the two different Fresnel lenses : Spot or Flood. The Alpha 4K can be also used in 2.5K : changing the bulb is easily done in seconds thanks to the lamp installation using a quick release latch on the ceramic G38 socket.

Output and reliability

The reflector is made of a composite of Quartz, which resists high temperatures (1200°C). Even though this material is white, its performance is higher by 10% than the regular aluminium reflector. Thanks to the combination of this reflector and the unique air ventilation system of the Alphas, the unit can be operated pointing straight down without damaging any component.


Alpha 4K est inclus dans :

  • Electrical consumption : 4K : 20 Amps @ 240V / 2.5K : 14 Amps @ 240V
  • Size : 53 x 58 x 36 cm
  • Weight with Lens : 23.6 Kg
  • Weight without Lens : 20.4 Kg
  • Lens Diameter : 350 mm
  • Speedring Reference : 9365
  • Available accessories : Special Shallow and Octaplus (+K5600 rings)

Distance : 3m

POSITIONLUXDIAPH 100 ASA 25 I/SRADIUSTOTAL ANGLE
SPOT (With Spot Lens) 77 000 22 1/4 22cm
FLOOD (With Spot Lens) 15 300 11 1,50m 53°
SPOT (With Flood Lens) 28 800 11 3/4 75cm 28°
FLOOD (With Flood Lens) 14 000 8 3/4 1,65m 60°
OPEN FACE 5 400 5,6 1/4 3m 90°

Distance : 5m

POSITIONLUXDIAPH 100 ASA 25 I/SRADIUSTOTAL ANGLE
SPOT (With Spot Lens) 27 720 11 3/4 0,36m
FLOOD (With Spot Lens) 5 508 5,6 1/4 2,50m 53°
SPOT (With Flood Lens) 10 368 8 1/4 1,25m 28°
FLOOD (With Flood Lens) 5 040 5,6 1/4 2,75m 60°
OPEN FACE 1 944 4 5m 90°

Distance : 10m

POSITIONLUXDIAPH 100 ASA 25 I/SRADIUSTOTAL ANGLE
SPOT (With Spot Lens) 6 930 5,6 3/4 0,74m
FLOOD (With Spot Lens) 1 377 2,8 1/4 5m 53°
SPOT (With Flood Lens) 25 929 11 1/2 2,50m 28°
FLOOD (With Flood Lens) 1 260 2,8 1/4 5,50m 60°
OPEN FACE 486 2 10m 90°