How to use histogram when taking pictures?

In Photoshop, the command corresponding to histogram is "histogram", and the Chinese version is translated as "histogram". Histogram is such a two-dimensional coordinate system, and its horizontal axis represents the brightness in the image, which gradually transitions from all black to all white from left to right. The vertical axis represents the relative number of pixels in the image within this brightness range. When the black color block in the histogram is to the left, it means that the overall tone of this photo is dark, which can also be understood as an underexposed photo. When the black color blocks are concentrated on the right side, it means that the overall tone of the photo is bright, which can be understood as overexposure unless it is necessary for special composition. At present, many digital cameras can call up histograms when taking pictures, which is very practical for accurate exposure when shooting. The significance of histogram in photography, the abscissa of histogram indicates the brightness distribution, the left side is dark, the right side is bright, and the ordinate indicates the pixel distribution. Histogram can show the distribution of hue in a photo and reveal the number of pixels at each brightness level in the photo. According to the shape of the image drawn by these values, the exposure of the photo can be preliminarily judged. Histogram is the best feedback of photo exposure. Whether the photo is rich in highlights or overexposed, full of details or dark tones, or the details can't be distinguished at all, the histogram can be displayed intuitively. A well-exposed photo should be rich in details at different brightness levels, with pixels on each brightness value, like undulating hills. For the convenience of observation, the histogram is divided into five areas: each area represents a brightness range, the left side is extremely dark, the middle tone, and the right side is bright and extremely bright. According to the number of pixels appearing in these different brightness ranges, for high-profile photos, the peak of the hill should be concentrated in the bright area on the right side of the histogram, and for low-profile photos, the peak of the hill should be concentrated in the dark area on the left side of the histogram. If the hill covers the whole area, the exposure is just right and the details are clearly visible. Histogram Histograms are sometimes not completely reliable for histograms. After all, we take pictures in different environments, so the exposure may be the same. Because the light is very strong when taking pictures on snowy days, that's how you exposed him at this time. So the histogram can't see the accurate exposure. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =