2. Color correction, brightness and color correction.
What we need to do in this step is to make the white image still white, the gray image still gray and the black image still black. Therefore, the color correction step includes black, white and gray point processing, which is usually completed by color scale or curve, and the reference target is histogram.
There are two steps to correct the color. First of all, we should correct the black and white field and adjust the underexposed or overexposed photos to normal. Let's first look at what the histogram of the photo standard should look like.
Note: In overexposed or underexposed photos, the adjustment tolerance range of JPG file as camera shooting format is much smaller than that of RAW format.
The second is to find out the gray points in the photo, restore the gray points and adjust the color to normal. When we can't find the gray spots, we use the normal skin color of the restored characters as a benchmark to correct the colors. What kind of skin is normal complexion? This is a vague concept. Of course, there are some vague definitions of vague concepts, such as CMYK and HSB color modes.
3, rough repair, basic modification of photo defects
The rough repair step is also divided into two steps, one is the basic treatment of the skin, and the other is the obvious puncture and stain modification in the control film.
It is necessary to put the basic steps of skin after color correction, because the process of photo studio requires both quality and speed, so many companies regard external dermabrasion filter as a necessary means to modify skin. In the color correction step, we adjust the skin color to be normal and distinguish it from other colors in the background, so as to maximize the effect of the dermabrasion filter.
If the overall tone effect has been set and then the skin is abraded, it may be difficult for the filter to identify the skin color, or the skin color is too close to the color of the overall or large-area background, which will affect the filter effect.
4. Color matching
Color matching should meet the requirements of photo theme and content. The color matching of digital photos is different from other designs. What we get is a set picture, so the colorist must know which colors to use in the adjusted picture.
Because the color tone of the picture will deeply affect the impression of the finished photo to the guests, whether it can attract the customers at first sight depends on the color tone, so the colorist should have the necessary color understanding.
Extended data:
1, remove the redundant part of the picture.
When we shoot in the early stage, we will try to avoid too many messy elements in the picture, because these extra messy elements will not only interfere with the main body, but also make the whole picture look messy. If some redundant elements are inevitably brought into the picture in order to make the picture more harmonious in the early stage, then these redundant and messy elements can only be removed in the later stage.
2. Highlight the atmosphere of the photo
When we look at a photo, the first feeling is the color feeling presented by this photo. In the early shooting, the color of the picture may be poor because of light or weather. Adjusting the color of the photo during the later retouching can increase the atmosphere of the photo and make the color of the photo look better and feel more.
3, make up for the lack of objective environment when shooting.
God won't give you blue sky and white clouds every time you take a picture, so when the environment doesn't meet your needs, you need to make up for it later. For example, changing the sky, cutting off redundant prospects, etc.
4. Restore the details of light/dark parts
In the early shooting, some parts of the picture will always be underexposed or overexposed for various reasons. Whether it is underexposed or overexposed, the details of the picture will not be displayed. The details of these bright or dark parts should be restored in the later retouching.
Step 5 Adjust the color temperature
Accurate color temperature is also important for photos. In some shooting occasions, the speed is very fast, and there is often no time to adjust the color temperature inside the camera. Especially indoors, due to the influence of ambient light, the color temperature is difficult to control, and it is generally necessary to adjust this point later.
6. Secondary ingredients
Although detailed framing composition was made during shooting, because the camera framing size is fixed or there are some regrets when shooting framing, it may be necessary to build a new personalized framing and cut off redundant scenes, which is commonly called secondary composition.
7. Optimize image quality
Sometimes the clarity, color purity, color balance and other indicators of the photos taken directly can not meet our requirements. Therefore, after the early shooting, most photographers will adjust the clarity, color purity and color balance of the photos to make them better.
8. Correct building deformation
Correcting building deformation is often used to adjust landscape photography, but sometimes it can also be used to shoot portraits. Different lenses or angles will cause different degrees of deformation of the picture, so after the early shooting is completed, the picture needs to be corrected later to make the picture look more comfortable and stable.
References:
Retouching _ Baidu Encyclopedia