Graphic Designer Needs to Master Color Management (II)

Ambient light source

The ambient light source mainly refers to the light of our work environment (office). This light affects the color of the item we see, which is to affect the color effect of our observation of printed matter and photographs. Poor lighting (over-dark, under-cooled, and over-heated) changes the observed color.

The standard color temperature of the lighting industry is D65, which is 6500K. The illuminance is 2000 lux and the color rendering index (CRI) is greater than 90. These numbers sound troublesome and the truth is very simple.

Color temperature, I believe we all know better, that is, the temperature of the light, the higher the color temperature, the cooler the temperature feels, 6500K is a relatively warm color temperature, which is basically equivalent to the temperature of the afternoon sun.

Illumination is the degree of illumination, which can be understood as light intensity. This is more difficult to detect and requires an illumination meter to detect it.

With the color rendering index, we can light the lamp and shine it on the palm of our hand. The palm of the hand appears ruddy and has a blood color indicating that the product has a high color rendering index. If the palm of the hand is blue, the color rendering index is low.

Above these indexes we need to use a first-class illuminometer, colorimeter to detect.

Unless you need to illuminate the entire office room in accordance with this standard (the price is super expensive, you can ask a professional to detect and install lighting equipment), otherwise you do not need to know so much, only need to prepare a device - standard light source color The light box, its color temperature, illumination, and color rendering index are all adjusted and used directly!

There are many types of color light boxes, large, medium, and portable.

Large designers don't have access to it, and you can see it in the printing house. The color table in front of the press is a large standard light source.

Most of the medium-sized lights are multi-light sources, and there are basically three types of light sources, D65, D50, and UV fluorescent tubes.

Portable is a single light source, but most of them are D50 light sources, D60 light sources should be carefully looked for.

Standard light source color light box price difference is very large, the most expensive tens of thousands of dollars, cheap portable as long as more than 1,000 yuan. Your recommended GretagMacbeth manufacturer's, cheaper recommendation of Shanghai Huali's production, the picture is all choose Shanghai Huali's color light box.

You can choose according to the strength of the company and the degree of precision required of the color.

With a standard light source color light box, so that when you look at the print color, you can put it in the light box, observe the color in the national standard, to see if there is a color cast, to contrast the difference between print and screen display, see The color is not the same (after reading our article and doing as required to ensure basic consistency).

Environmental light source supplement

The standard light source we have, but there are a few issues that are best to pay attention to, one is the color of the office wall, and the other is the color of the clothes in daily work. Many people will say: This - - - - - - - - - - - - - -!! Do not worry, we come to say one by one ~

The office wall is best neutral gray, what is the neutral gray do not explain it! Now many advertising companies in order to make the decoration look cool, will choose to use the cement wall directly, which is a better neutral gray (Wangjing 798 The advertising companies in the factory directly use the walls of the factory to save money, labor, and standards.) Pure black and white walls are also acceptable, but what are the most taboos to use? What are the big red walls, green walls, or yellow orchids? These solid colors.

Working in these brightly coloured rooms, all the other colors you see will be offset by the color of the wall colors, so you will not be able to see the colors at all. (We've seen so many companies like this. My mom ~~ is too stimulating. ~~).
The same is true for the color of clothes, too bright clothing colors will also affect our observation of other colors. After all, designers rely on the keenness of the eyes to eat, and our eyes are easily affected by the environment. So, I hope everyone will treat the office environment and work clothes with a bit of simplicity.

Another point to remind designers, myopic people wearing glasses is best not to choose radiation protection film glasses (or what polarizing glasses), these glasses have different degrees of color, not yellow or blue. You may not feel like wearing these glasses because our eyes are very adaptable. However, when you observe colors, you have already experienced a great deal of deviation. Everyone can look at the glasses on a white paper to see if their glasses are color cast.

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