L3.40500.D TB ST1-1

True Blue ST1

The ideal choice for TV and film studios

ARRI True Blue represent an unprecedented evolution of the studio fixtures that have been popular workhorses for over two decades. Following extensive research and feedback from lighting professionals around the world, combined with advances in technology, ARRI has designed a series of six highly innovative lampheads with over 30 new improvements for studio and location lighting. ARRI Fresnels are available in both manual and pole-operated versions.


  • Cross Cooling System: new, highly effective cooling streams in addition to conventional cooling
  • Sliding Stirrup: centre of gravity adjustment
  • Tilt Lock: stainless steel friction disc for rigid lock-off
  • Top Latches: application-oriented Top Latches for location or studio use
  • Adjustable Accessory Brackets: adjustable 2-scrim and 4-scrim position
  • Stainless Steel Lens Protection: maximised light transmission and high temperature stability
  • Extremely Robust Barndoors: made of special alloy with high strength-to-weight ratio and effective tightening function
  • Maintenance: more shared parts, very fast access to all interior workings with three torx drivers only
  • Protection Class IP23: safe indoor and outdoor use
  • Safety Certification: CE, GS, cNRTLus
Technical Data
True Blue ST
True Blue ST1
Mains Plug
Schuko, Bare Ends
Lamphead Type
Fresnel, 1,000 W
Spherical specular high purity aluminium
Lamp Type
CP/40 FKJ 1,000 W, 230 V; CP/71 FKJ 1,000 W, 230 V
Power Consumption
1,000 W
Voltage Range
100 to 240 V
Lamp Base
yes, 0 to 100 % via external dimming system
Correlated Color Temperature
3,200 K
Beam Angle
8,3° to 53°
Weight in kg net*
approx. 7 kg
Weight in kg packed*
approx. 9 kg
Weight in lbs. net*
approx. 15 lbs
Weight in lbs. Packed*
approx. 20 lbs
Measurements (HxWxL) incl. Pin in mm*
Measurements (HxWxL) excl. Pin in mm*
398 x 362 x 325 mm
Measurements (HxWxL) incl. Pin in inch*
Measurements (HxWxL) excl. Pin in inch*
15.7 x 14.3x 12.8"
Measurements (HxWxL) Packed size in mm*
475 x 395 x 405 mm
Measurements (HxWxL) Packed size in inch*
18.7 x 15.6 x 15.9"
Lens / UV-Protection Glass Diameter in mm
175 mm
Lens / UV-Protection Glass Diameter in inch
Accessory Diameter in mm
230 mm
Accessory Diameter in inch
9.0" (Scrim)
Barndoor in mm
245 mm
Barndoor in inch
Spigot 28 mm / 1 1/8"
Housing Color
Blue/Silver, Black
Protection Class / IP Rating
I / IP23

Note *Weight and dimensions are rounded values.