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Why do people shoot out photos are Mimi da, he shot out of the picture ugly death? You tangle for a long thing, it is actually very simple. We often talk about such things light, but never get my partner who talked a good light inside the human body have some touch vain things. Today, let's talk about the color of this kind of thing. Before chat color, let's talk about a few everyone will encounter scenes of life.
The following two strings of iron, which disk you want to eat more?
When trying on clothing skirt obviously left Jiang Zi, home only to find that kind of skirt is on the right spicy! Angry wrestling! Bad review!
See in the supermarket fruit is left of this mouth-watering, but at the roadside stalls to see the fruit may not like this.
Everybody should be able to observe, under different light sources, the same string of iron plate, with a skirt, the same fruit, whose colors are quite different! This relates to the color of the light source of the problem it!
What is the color of the light source?
The color of the light source, the light source refers to the object rendering natural colors extent. That is, the degree of color fidelity, often called "color rendering index" (Ra). Color is divided into two categories, "faithful color" and "color effect", we usually say, is a faithful color.
International Commission on Illumination (CIE) will sunlight color index is set to 100, and provides 15 test colors, with R1-R15 respectively represent the 15 color rendering index. When the light source with a predetermined reference light source by comparing the index value of 100 is the best.
R1-R15 What is a ghost?
So many colors! In the end what is the significance? Actually, each light source has a relatively sensitive to color, say some sources are more sensitive to red, then in its light, red objects displayed by the color will be more authentic, but other colored objects under its irradiation not be able to achieve a very real effect of color reproduction.
Professional speaking, light color evaluate the merits of the main consideration its R1-R8 8 types of natural color, R9-R15 7 kinds of test colors, reducing the total level of 15 colors, and we often speak Ra refers the average light on the R1-R8 8 types of natural color reduction level, R9-R15 is not counted.
We usually see lighting manufacturers label will be written when the product CRI Ra> 90 (R9> 50) and similar labeling method, Ra> 90 to show that the fixture color for R1-R8 8 types of natural high degree of color reduction, R9> 50 indicates that the lighting of the red object has good color reproduction capability.
How to choose the color of the lamp for the article?
Select the appropriate means of lighting was mainly based on the color of the illuminated object to the decision, such as the beginning of the article three comparison chart, the left side of the iron strings using high color rendering index R9 of light, so it looks more shiny delicious; red dress on the left is using a high color rendering index R9 of light, so it looks more vivid and bright colors; and left the supermarket fruit since the light source used in the color rendering index Ra is good, so it looks more appetizing.
Supermarkets and shops for meat shop window lighting, R9 CRI is particularly important; and for the studio, the studio that require a true representation of the skin color of the occasion, the lighting must not be lower index R15; museums, galleries other places are required for all colors can restore the true height of Ra and R1-R15 index seeks more stringent.
After reading the article, there are parents who have long wooden knowledge?
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