In recent years, the LED technology has made a huge progress in the development, an increasing number of people in TV and Film Production industry are introducing LED lightings that are both durable in lifespan and efficient in power consumption to replace traditional studio light luminaires.

However, when compared to traditional incandescent light sources, LED luminaires are not always the perfect choice for TV and Film Production industry, the spectral distribution of LED light source makes cameras recording the false colors information, and display the color cast on the screen. These problems will force producer spending a lot of time and big money for expensive post-production.

Thus, European Broadcasting Union (EBU) presented new evaluation standard for studio lights and luminaires, Television Lighting Consistency Index (TLCI). TLCI mimics a complete television camera and display, using only those specific features of cameras and displays which affect color performance, and there are more and more TV Studio (such as: BBC, CNN, NBC, iTV, Disney CHANNEL …) adopt TLCI as their purchasing standard.

In the past, people should take an expensive spectroradiometer for spectral measurements and a computer installed with data-analyzing software to get accurate TLCI values. Now, you have a much more convenient and smart choice: world’s first handheld and SMART spectrometer “Lighting Passport” and the SMART APP “Spectrum Genius” series.

Asensetek, manufacturer of the world’s first SMART spectrometer “Lighting Passport,” has spent the past year in the development of a new SMART APP. This SMART APP is called “Spectrum Genius Studio (SGS),” and it gives you the ability to get complete the TLCI information easily and quickly.

As well as “Spectrum Genius Mobile (SGM)” and  “Spectrum Genius Essence (SGE)” also added the TLCI (Qa) value, gaffers can measure the basic TLCI (Qa) for choosing TV lights reference before the shooting.

Five levels of TLCI

85~100Errors are so small that a colorist would not consider correcting them
75~85A colorist would probably want to correct the color performance, but could easily get an acceptable result
50~75A colorist would certainly want to correct the errors, and could probably achieve an acceptable result, but it would take significant time to get there.
25~50The color rendering is poor, and a good colorist would be needed to improve it, but the results would not be to broadcast standard.
0~25The color rendering is bad, and a colorist would struggle for a long time to improve it, and even then the results may not be acceptable for broadcast.

According TLCI levels form, if the score of greater than 90 is widely regarded for television use, and it can reduce post-production time and labor costs. But if it is the same as shown below, TLCI value is only 52, it will take more time and effort to correct in post-production.

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Left: From human eyes                                      Right: From screen display

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SGM measurement results page

Through the creation of the cutting-age SMART spectrometer “Lighting Passport” and the amazing SMART APP “Spectrum Genius” series, Asensetek’s intention is to help the professionals in Television and Film industry and give them a better way to choose the most suitable LED luminaires, and we will also proudly make announcement of formal release of “Spectrum Genius Studio (SGS)” in June.

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Television Lighting Consistency Index (TLCI) introduction
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