1, illuminated by metal halide lamps, can be divided into so-called yellow light and white light, and even blue light which is rarely seen in the market (generally used in special environments or aquariums). One feature is that it can generate strong light and brighten a large area of space.

2. Purple jade bracelets are sensitive to light, so they will show different concentrations of purple under different colors of light sources; In yellow light, purple is more pink than in natural light, while in white light, the color is gray. Also, the clear water jade bracelet "can't hide" strong light.

3. Direct light: Direct light can be used to identify jadeite, and the flashlight light source can be close to the surface of jadeite for direct work. The flashlight light source shines directly on the jade surface, which will be translucent and the charm will be relatively concentrated. Then, you can gradually translate the flashlight to observe whether the texture of jade is uniform.

4. So the jadeite dyed by acid washing can be identified by ultraviolet light. However, it should be noted that purple light can only be used to exclude jade fakes, and it cannot be proved to be genuine.

5, jadeite, jade, pearl products, mainly soft, color temperature between 4500k-5500k, it is recommended to choose LED lamps (because LED lamps have a long life, no radioactive harmful substances such as infrared rays, and the heat emitted is much lower than that of metal halide lamps. Can protect jewelry and jade very well.

6. Then take an ultraviolet light source, aim it at a certain place of jade, and irradiate it at an inclination angle of 30 ~ 75. If the jade is still pure and bright, without fluorescence, discoloration and good transparency, it shows that the quality of the object is ideal.

In what light does jadeite look? In what light does jadeite look?

1. In general, the best observation method for buying jade bracelets is the combination of natural light and lighting. We should not only observe carefully under the light, but also feel the most natural color of the jade bracelet under natural light. Only by combining the two can we get a relatively reasonable judgment and satisfactory results.

2. Direct light: Direct light can be used to identify jadeite, and the flashlight light source can be close to the surface of jadeite for direct work. The flashlight light source shines directly on the jade surface, which will be translucent and the charm will be relatively concentrated. Then, you can gradually translate the flashlight to observe whether the texture of jade is uniform.

3, look at jade jewelry, look at the color, there is only one industry standard: natural light, entry. That is to say, around noon during the day, where the sun is not direct, it is usually by the window, with jade in hand, looking straight, and the visual effect is the most accurate at this time. You can't look at the color under the light or direct sunlight, which is very different.

4. If jadeite appears green fluorescence under the irradiation of ultraviolet light source, it means that it belongs to Grade B jadeite, because colloidal substances are added in the production process. If the object is irradiated by ultraviolet rays, the transmittance is not ideal, and there is serious diffuse reflection, which means that its texture is poor and it should belong to grade C or D jadeite.

5, look at the texture, jade can be identified by light, the real jade will show a relatively transparent texture after being irradiated by light, and the situation inside is clearly visible. The fake jade is muddy, and the situation inside is not clear.

How to shoot jadeite

First of all, you should have a jewelry camera lamp that can imitate natural light, then turn on the light left and right, because this can reduce the shadow, and then clean the jade surface. You can stand up, or you can find something to drag or hold in your hand. Things like this are very good. Anyway, I took it casually.

Find the most beautiful side of jade, turn around the theme with your mobile phone and find the most beautiful angle you think. Only after reading it can we show its beauty to the extreme. Background selection: pat the water jade ornaments, don't choose the black background, it will appear that the cotton is particularly heavy and the planting is particularly dry.

Wipe the jade clean before you shoot it. This is superficial work. Get ready to turn on the light. Jade ornaments see colors through light. Always on lights and flashing lights can be used. Put it on a bracket or on a dark background with background light. The purpose is to shine through jade, not too close to jade, which is easy to penetrate jade.

First, take photos of jade, such as jade, in natural light, preferably before 10 am. Second, the light should be multi-angled. Sunlight can easily reflect the details of the jade surface, and backlight can show the permeability of the jade interior. More than two light sources can simultaneously reflect the interior and exterior of jade.

White balance. Generally speaking, the main colors of jadeite products are cool colors, mainly green and cyan. Therefore, in the process of shooting jade ornaments, the background color is more suitable for using warm colors, which can highlight the cool colors of jade and give people a stronger visual effect.

In order to illuminate the front, we added another lamp on the camera side to illuminate the front part of the bracelet. We used a four-fold lamp cap, which is roughly at an angle of 45 with the camera, and the lamp cap is slightly inclined downward, so that the light irradiation has a clear direction.

What kind of light should the color of jadeite be observed under?

1, there will be no color cast under white light irradiation, and the internal structure of jadeite can be seen. Yellow light is close to natural light and does not reflect light when illuminated, which is beneficial to naked eye observation and can see the color of jadeite. Purple 365nm is an invisible light wave, which can be used to identify fluorescent substances.

2, look at jade jewelry, look at the color, there is only one industry standard: natural light, entry. That is to say, around noon during the day, where the sun is not direct, it is usually by the window, with jade in hand, looking straight, and the visual effect is the most accurate at this time. You can't look at the color under the light or direct sunlight, which is very different.

3. Transparent observation: Transparent observation refers to observing jadeite through sunlight or artificial light source. When observing jadeite in the light source, natural jadeite will show some impurities, defects, color roots and color distribution in the transparent part. Observing fake jadeite by light, there is generally no flaw, and the distribution of outstanding roots and colors cannot be seen.

... not reflecting light, reducing color difference? What kind of background, lighting and photography do you need? ...

1. Finally, you can add a floodlight or spotlight to illuminate the background behind the subject, as shown in figure 1 12, so as to separate the subject from the background. It's up to you to decide which point behind the subject the background light should be aimed at.

2. It is difficult to shoot these two colors in a small studio (about 20 square meters) because there are many random reflections of light. When shooting a black background, be sure to keep the subject away from the background for more than 2 meters. Do not turn on the background light, keep the main light close to the subject, and use a blackboard between the light and the background.

3. Because the selected objects are mostly small, the lamps I use most are spotlights and small reflective cardboard, and sometimes I shoot with natural light. Example light bulb this picture was inspired by a light bulb that I accidentally broke, and the idea of creation came into being at that time.

4. ⑤ It is suggested that the color of the whole store should be uniform, not colorful. Texture selection: ① Push the flocking background cloth first, and choose the one with high density and thickening. It is very effective to shoot macro and small items. Because the flocking cloth is very detailed and does not reflect light, the background color is very clean.

5. Canon 60D can shoot in RAW format and JPEG format. If the image quality is high, the RAW format will be converted into DPP after shooting, and the clarity is guaranteed.