Dry goods photography starts with understanding the histogram.

Dry goods photography starts with understanding the histogram.

What is the histogram?

Histogram can help us to know the tone characteristics of a photo well, and it can help us to achieve the desired effect better both in the middle and later stages of shooting.

1: Where the pixel area is large, what color tone does the whole photo belong to?

2. The steepness of the waveform is the degree of light-dark transition of the photo. The steeper the waveform, the greater the contrast between light and shade. On the contrary, the transition between light and shade is soft.

3. The more evenly the pixel information is distributed in the histogram, the more details are recorded in the image, otherwise, the less details are recorded in the image.

Put the mouse on the histogram, the corresponding text will appear in the lower left corner, and a protruding area with a light gray background will also appear on the histogram, which is the color code corresponding to the text in the lower left corner.

The black scale is the darkest part of the photo. If there is overflow, the photo is dead black.

Shading indicates the darker part of the photo, and there is no dead black.

Exposure is the place where information is mainly concentrated.

Highlight is the brighter part of the picture, and white level is the brightest part of the picture.

Underexposure: information is concentrated on the left.

Dark tone: information is concentrated in the shadow area.

Intermediate sound: information is concentrated in the middle.

Highlight: The information is concentrated on the right.

PS: Histogram can be dragged.

Long-tone photos have a wide brightness distribution and a sense of hierarchy, such as some landscape photos.

The brightness distribution of mid-tone photos is not so wide, layered and soft, such as some night photos.

Short-tone photos are difficult to control, so they should be suppressed.

What is the light ratio?

Light ratio: it is the ratio of light and dark, that is, the light receiving ratio of bright and dark parts in the picture.

The greater the light ratio, the greater the contrast of the picture, the greater the contrast, the more layered the picture, and the more stereoscopic it looks. The smaller the light ratio, the smaller the contrast of the picture, and the softer the bright and dark parts with low contrast.

Light and shade are widely distributed, accounting for about 90%.

There are corresponding peaks between light and shade, with distinct levels, big contrast and no softness.

The distribution of light and dark is narrow, most pixels are concentrated in a small area, and the brightness distribution accounts for about half of the overall brightness, and the corresponding peak only appears in the dark, with small contrast and relatively soft.