Why is TLCI more important than CRI for professional sports venues?

Similar to the human eye, digital camera sensors have their own unique corresponding curves for blue, green and red(see figure 1). The sensitivity of digital cameras is different from the human eye, so the way digital cameras capture color is different. The European Broadcasting Union (EBU) created the Television Illumination Consistency Index (TLCI-2012) for digital cameras to replace the CRI.

Figure 1: Color response curves of the human eye and a CCD camera

High TLCI LED lamps help filmmakers, broadcasters and digital creators capture scenes in a consistent light, reducing or eliminating costly color corrections in post-processing. Figure 2 shows the toning effort required by a professional colorist for different lighting scenarios with different level of TLCI. It can be seen that under TLCI> 90 scene will allow a professional colorist to easily make color corrections, whereas in TLCI>95 no need for color correction at all in all but the most demanding scenarios. AIKO’s LED sports lights are available in 90+ TLCI and 95+ TLCI to meet the different needs of customers.

Figure 2: The effort and skill needed (right) to properly color correct photography or videography illuminated by lights of a typical TLCI value of the scale on the left

Using a simple HD digital camera, we can easily demonstrate the color rendering difference under 90 CRI and 95 TLCI. Figure 3 shows a standard 90 CRI illuminated scene at 1500 lux. Figure 4 shows the same scene illuminated by a 5700K 95 TLCI 95 CRI. It is easy to see the differences in the fabric samples on the far left, which have clearer whites and more vivid cyan and light blue colors. For comparison, Figure 5 shows the same scene illuminated with the same lux by a standard 70 CRI LED.

Figure 3: Scene illuminated by a standard 90 CRI at 1500 lux

Figure 4: Same scene illuminated by a 5700K 95 TLCI 95 CRI

Figure 5: Same scene illuminated with the same lux by a standard 70 CRI LED

If you use photo editing software to zoom in on these fabric samples (see Figure 6), the digital RGB value differences will be revealed between 90 CRI and 95 TLCI lighting. The RGB values in the white sample are closer to pure white (255, 255, 255), especially in the blue component. In the cyan sample, RGB values showed better saturation in all three channels, but the biggest difference was in the blue component. This difference can be expected, as the 95 TLCI LED fills the cyan gap better than the standard 90 CRI LED. The red channel also shows a significant increase in saturation due to the wider and longer wavelength red component of the 95 TLCI LED

Figure 6: Comparison of digital RGB values on white (top) and cyan (bottom) fabric swatches. TLCI and CRI values of the illumination are inset in the zoom circles.

More to explorer

Advancements in Sports Lighting Technology: Enhancing Performance and Spectator Experience

Advancements in sports lighting technology have revolutionized the way sports venues are illuminated, leading to improved performance for athletes and an enhanced experience for spectators. From the integration of wireless controls to the use of energy-efficient LED lighting, these innovations have transformed sports lighting systems, optimizing visibility, and reducing operational costs. Understanding the Significance of Adequate Sports Lighting Proper sports lighting is of utmost importance to enable athletes to perform at their highest

1 by1 retrofit metal halide with LED

Metal halide lamps, often referred to as metal halide bulbs or fixtures, are a type of high-intensity discharge (HID) lamp that produces light by passing an electric arc through a mixture of gases and metal halide salts. These lamps are commonly used for indoor and outdoor lighting applications where high levels of brightness and color rendering are required. AIKO engineers are working now, and we pushed out ASP04 Series LED Sports Floodlights that can truly

Create the perfect stadium experience – the bright future of modern stadium lights

In modern sports events, the stadium lighting system plays a crucial role. As a professional stadium lighting manufacturer, we are committed to providing our customers with the most advanced, efficient and reliable stadium lighting solutions to achieve the perfect stadium experience. This article will introduce you to the advantages and technological innovations of modern court lights. First of all, modern stadium lights use LED technology, which has brought revolutionary changes. Compared with traditional

The Mysterious Origin of the Northern Lights Confirmed: The Greatest “Light Show” on Earth

The Northern Lights, often referred to as the greatest “light show” on Earth, have captivated scientists and observers for centuries. The mesmerizing phenomenon, unique to high latitudes, has finally had its elusive origin confirmed in a groundbreaking study by physicists at the University of Iowa. This confirmation sheds light on the powerful electromagnetic waves generated during geomagnetic storms as the cause behind the most stunning auroras. Unveiling the Electromagnetic Waves: The recent study