For theater models, it may be meaningless to test the effect of office presentations, but the clarity of the text and lines is directly examined by the quality of the lens. A good lens must not only focus accurately, but also ensure that the corners of the picture are not distorted, but also provide the lowest possible dispersion effect.
White text effect on black background black text effect on white background
We are always curious about this lens, and we are full of longing for its popular low dispersion lens. What is the effect?
Picture and text mixing effect 3 Picture and text mixing effect 4
The actual test results showed that the HW20 focused accurately. No distortion was found in the four corners of the screen, and lines, textures, and histograms were clearly visible.
How can we reach a High Hardness Carton?
1. The thickness and material are two key factors that determine the hardness of the Carton
High-hardness cartons usually have three or five carton boxes, and of course, there are seven thicker ones. The more carton layers are thicker, the third and fifth floor cartons are also listed with corrugated and double corrugated cartons. There are also various carton materials. Good materials are not only high in hardness, but also light in weight. Materials that are poor are often very low in hardness and are easily deformed. The material of cartons on the market is "KK>KA>KB>AA>AB>BB", KK It is the best material at the moment, but the price is also the most expensive.
2. Achieve high hardness carton can also use ordinary cardboard to strengthen the core treatment, plus hard surface treatment.
I suggest that sellers choose different types of cartons according to their needs. For example, fragile, valuable items can be used with five-layer AA cartons, ordinary items that are thrown, or the product itself comes with a Paper Box. Choosing three layers is enough.
High Hardness Carton
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Shenzhen Yanhua Packing Products Co., Ltd. , https://www.yhpackagingbox.com