(TM-30-15 Rg can go above 100 in that case the closer the value is to 100 the better the light.) We discuss these further in our article “ Understanding the Complete LED Database: Testing Procedures.” These indices include CRI (Ra), CRI (Re) (also known as extended CRI), TLCI, CQS, and TM-30-15. The result is a numbered rank with 100 being the best. These indices work by comparing specific color samples illuminated by the test light, then comparing them to the same color samples lit under a light standard. Various color perception / color indices were created that summarize how well a light renders color. While a larger discussion of these characteristics are beyond the scope of this article, here is a brief description of each. (Some spectrometers and color meters do measure a few of these characteristics, but not all.) Of course there are also qualities such as brightness, flicker, spread, softness, and throw, but these aren’t color dependent and so simpler meters make more sense. Specific wavelengths and colors that could be problematic as well as spikes and valleys.How well the light’s spectrum matches the standard.When I evaluate the color quality of a light, some of the main things I look at are: Then I will switch and cover features of the actual device such as user interface, speed of taking a reading, etc.
COLOR SPECTRUM HOW TO
First I’ll go through all the spectral readings that most spectrometers give, and explain how to read them and why they are important. To help you decide which spectrometer is best for your needs - whether you are purchasing, renting, or borrowing it - I broke down all the different features of spectrometers. Some meters are very easy and intuitive to use, others require constantly referencing the manual. Some give lists and lists of information while others just present the basic info of a light. This is why color meters and spectrometers are so crucial on-set.Īll spectrometers are not the same. Fail to address these qualities of your luminaires and you run the risk of finding out in post that your image has uncorrectable color problems. While some filmmakers only measure the color temperature of their lights to set white balance, there are so many other important color characteristics of light that need to be carefully considered to fully assess a light fixture used to illuminate your scene.
0 kommentar(er)
