Zero-based photography

1. What is a shutter?

A device that controls the time when light enters the camera.

2. Shutter value

The unit of shutter speed is "seconds". The highest shutter speed of professional 135 cameras reaches116000 seconds. Common shutter speeds are: 1, 1/2, 1/4,1/81/5, 1/30,1. 1/2000 and so on. The shutter speed exposure of two adjacent stages is twice as different, and we often say that the exposure is one stage different. For example,1125 seconds is twice, that is, 1/60 seconds is more than 1/65435 seconds.

Second, the shutter setting and safety shutter

1. shutter setting

In the case of M or TV, you can adjust the shutter speed by turning the instruction dial on the camera (different cameras have different positions).

2. Safety shutter

Noise can be removed in the later stage, but the "paste" caused by hand shaking is irreparable. If the shutter speed is fast, my hand jitter will not be reflected at that moment. The slowest shutter to ensure hand jitter is called a safety shutter.

Safety shutter = 1/ current focal length of lens. For example: 100mm, safety shutter =1100 focal length. 60mm, safety shutter = 1/60.

Third, the shutter function 1

Function one

You can adjust the time when the light enters the lens. The faster the shutter, the less light enters and the darker the picture. The higher the shutter is opened, the more light enters and the brighter the picture is.

practical application

When shooting in the field, if the ambient light is too dim, then among the three elements of exposure, we should first reduce the shutter speed and increase the exposure without affecting the subject definition.

Shutter action 2

Shutter speed affects the continuity of the picture. High-speed shutter, shooting high-speed moving objects, such as birds and football matches. Low-speed shutter, mostly used to shoot continuous pictures such as rivers and traffic.

In actual combat, high-speed shutter is more suitable for capturing high-speed moving objects, such as birds, bullets penetrating water polo, racing cars and so on. The low-speed shutter is suitable for shooting scenes such as water mist and traffic, and you want it to form dynamic blur.

3. Practical application

Fourth, summary.

1. Know the shutter and control the time when the light enters the camera.

2. The shutter speed is generally expressed as "1/x", such as 1/30, 1/60,1/25, 1/250, etc.

3. Shutter setting: In the case of M file or TV file, the shutter speed can be adjusted by turning the instruction dial of the camera red (different camera positions are different).

4. Safety shutter, safety shutter = 1/ current focal length of the lens, for example: 100mm safety shutter = 1/60, safety shutter =100.

5. Shutter function

You can adjust the time when the light enters the lens. The faster the shutter, the less light enters and the darker the picture. The slower the shutter is, the more light enters and the brighter the picture is. Shutter speed affects the continuity of the picture. High-speed shutter: shoot more high-speed moving objects, such as birds and football matches. Low-speed shutter: it is mostly used to shoot continuous pictures of rivers and traffic.