How to shoot glass on a black background is better?

Shooting glassware is a very interesting artistic creation. Because glass objects have different modeling effects for different lighting modes. Shanghai product photographers can sketch the outline of glassware with lights at will, and can skillfully use the reflection of glass to reveal its crystal clear essence; Photographers can outline the shape of glassware in front of a black background with white edge light; You can also achieve the same goal in the opposite way in front of a white background. What I want to introduce now is the method of shooting glass cups in front of a black background. Lighting commonly used in shooting glass: backlight, bottom light and top light The most common mistake in shooting glassware is to directly illuminate the subject with light from the front. If the lamp is used in this way, there will be dazzling reflection on the glassware, like a mirror. Glass sometimes reflects the image of the lamp truthfully, making the picture very unsightly. Therefore, no matter shooting any reflective object, don't use direct light! In other words, do not directly illuminate the glass surface from the front. So, what kind of lighting should be used to shoot glass? There are about three kinds: 1, backlight; 2, bottom lamp, 3, lamp. For example, we wrap chocolate candy in gold paper and silver paper to shoot a glass. These metal foils make shooting more difficult. Because, in order to make the color of metal foil have enough expressive force, it is necessary to irradiate the main body with multiple light sources from different directions. Otherwise, the metal foil will flicker, affecting the beautiful picture. So, how should we market light? First, the outline of the cup should be shot before the black background, that is, several white highlights should be drawn on the main edge of the cup. First, put Yi Deng on the top of the cup and put a soft light cover in front of the lamp. If the light source area is too large, it will affect the darkness of the background. You can cover the light source with black paper, or add a baffle behind the lamp. At this time, a round of white highlights will appear at the top and bottom of the cup. Then, put a piece of white paper higher than the cup on both sides, and a white highlight will appear around the cup. With the prominent outline, the shape of the cup will be revealed in front of the black background, but this is not enough. In order to show that the cup is round, three-dimensional and glass-like, it is necessary to add a decorative highlight to the cup (that is, the highlight on the left side of the cup). This is the reflection effect caused by placing a mirror on the table in front of the cup on the left. I don't think this reflecting point is obvious, so it's better to look at what's in the cup. How to solve the illumination problem of the objects in the cup? The cup placed in front of the black background has a highlight around the white to outline its shape; There is also a white reflection to illustrate its texture and three-dimensional effect. It seems to be basically enough. Because it is transparent, we don't need to use lights for lighting. However, now the cup is filled with chocolate wrapped in metal foil, which needs to be illuminated in many ways. Because of this, it is necessary to add another lamp: put a lamp with soft light facilities in front of the cup, and then add several white reflectors around the cup to make the metal foil wrapped in chocolate be irradiated in many ways. But it is very important that the position of the additional lamp and reflector must be carefully adjusted to avoid seeing its light on the glass cup. If you take a close-up, the camera is very close to the cup and the camera leather cavity is very long. During exposure, the aperture of 1.5 should be increased according to the photometric reading to compensate for the light loss caused by the elongation of the leather cavity.