Ask the shooting method of coarse texture type photos?

Coarse-grained photos, that is, the image particles on the photo screen give people a rough feeling, which is similar to the special effect produced by screening when printing and enlarging, and is different from other photo types that pursue saturation and detailed texture. Because the image particles of this kind of photos are coarse, the density is not enough, the contrast between black and white is not very big, the dark parts of the photos will not appear too dark, and the bright parts will not appear too light. The colors and tones of the whole picture are relatively light and soft, which is a relatively elegant and artistic photo type. The reaction and discussion of the photography market: Generally, people with unique and elegant personalities can appreciate the style of this kind of photos, and those who have studied photography have a special liking for this kind of photos. However, some people who lack the concepts of photography and art often can't accept the rough texture on the screen, and will think that this is caused by amateur or non-professional film shooting, and even think that photographers are suspected of cutting corners. Therefore, when taking this kind of photos, it is best to know about the artistic quality of customers, so as to avoid self-defeating and futile. Description of key shooting techniques 1. Using ultra-high sensitivity film shooting method: this is the easiest way to get rough particles in the image. If you like this kind of photos, you can choose a high-sensitivity negative, such as 800-degree or 1600-degree film, and shoot it with a 135mm camera, and the effect will be more obvious after enlargement. When developing photos, because the emulsion of the negative film itself is coarse particles with high sensitivity, it will naturally get a rougher image than the general negative film. Moreover, when a small negative is enlarged into a large photo, the phenomenon of coarse particles will be more obvious (135 benefits of film). 2. Use negative sensitized development method: that is, shoot with sensitized negative film of about 400 degrees, which is deliberately smaller than secondary exposure, and the underexposed part is compensated by increasing the development time during the development of negative film. Because the negative film stays in the developer for a long time, the photosensitive particles will become coarse, which is the commonly used sensitized development method. People who use this method need to remember the exact number of underexposed documents when taking pictures, so as to ask the printing company to compensate according to the formula. At present, the new negatives introduced by various manufacturers have quite detailed picture quality, so this kind of sensitized development method is not effective; But in the past, this was the most commonly used technique in photography. 3. High magnification: that is, the image texture will become rough when the negative is magnified at high magnification, so as to achieve the effect of rough texture. Generally, when the negative film is enlarged or enlarged by more than two times, the image particles will become rough due to the enlargement, and can be seen clearly by the naked eye at high magnification. You can also use coarse lens and screen printing technology to get photos with the same coarse texture. No matter which method is adopted, it is best to expose it slightly less than one file when shooting, so that the printed photos will be coarser.