What does the camera shutter mean?

Question 1: What does the shutter in the camera mean? For example, you may be easier to understand: close your eyes, open them at different speeds, and then close them quickly. Because the speed of opening eyes and closing eyes is different, the details of the scenery you see must be different. The opening of the camera is the "door" through which light passes. The film reflects light quickly, and a good image can be formed with proper opening and closing time. Short time and insufficient exposure time can not form a clear image. After a long time, it will be overexposed, and it will not show the level and details of the image. This door is always closed. When we adjust the camera through the viewfinder and press the shutter, the film has recorded the scene we want to shoot.

Question 2: What does the shutter in the camera mean?

A shutter is a device that blocks light from entering a lens. Generally speaking, the larger the shutter time range, the better. Low seconds is suitable for shooting moving objects, so a camera emphasizes that the shutter can reach116000 seconds at the earliest, which can easily capture fast moving targets. However, when shooting traffic at night, the shutter time will be lengthened, and the silky water flow effect in ordinary photos can only be photographed with a slow shutter.

As for the common B shutter function of monocular cameras, although you can freely decide the exposure time and have higher shooting flexibility, most consumer digital cameras can't support it at present, and can provide the default values of slower speeds such as 2 seconds, 8 seconds, 16 seconds at most.

Shutter delay time

When the camera does not use the focus lock function and ensures that it is in the auto-focus working state, the time from pressing the shutter release button to starting exposure is called shutter lag.

Shutter pre-exposure mode

After we decide the shutter speed ourselves, the camera metering system will automatically select the appropriate aperture F value (which can be a stepless F value) according to the light conditions at that time. Digital cameras equipped with exposure mode dial usually engrave the letter "S" on the dial, which stands for the required shutter mode. Shutter priority mode is suitable for photography that needs to control the shutter. High-speed shutter can condense action, and slow shutter can turn moving vehicles into light beams.

Shutter delay

When the camera presses the shutter, the time required for the camera to focus automatically, measure light, calculate exposure, select appropriate exposure combination, calculate and store data is called shutter delay.

Camera shutter

shutter

According to the position of the shutter in the camera, it is divided into:

Mirror shutter

The original shutter is just a cover in front of the camera. Remove the cover in front of the lens by hand during exposure and cover it by hand after exposure. Later, it was improved into a pneumatic Shuang Ye shutter. Shutters in front of the mirror are mostly used in miniature cameras such as Adissa 16 and Minos.

The front shutter of Adisa 16 is composed of four thin metal blades, and the highest speed is1150 seconds.

The front shutter of Minos B miniature camera is composed of two thin metal blades, and the speeds are respectively: t, b, 1/2, 1/5,110, 1/20, 1/50.

At present, the mechanical shutter structure of mobile phone cameras is almost always in front of the mirror.

Advantages of the shutter in front of the mirror: simple structure and convenient assembly.

Disadvantages of the shutter in front of the mirror: because it is placed in front of the lens, the aperture of the shutter should be large to avoid blocking the light path, so the shutter blade has to go a long distance, so the shutter speed is slow.

Inter-lens shutter

Many mid-range 35 mm cameras, mid-range double-reflex cameras, and modern simple 35 mm cameras all use the mirror shutter.

The kombucha shutter of Tenas TENAX camera in Goetz factory in Berlin is controlled by two small dials, such as the kombucha shutter of Tenas camera in Goetz factory in Berlin. A dial is controlled by 1, 1/2,1/5,65438. The other dial controls D (equivalent to T) and Z (equivalent to B).

Later, the shutter between mirrors was only controlled by a graduated ring.

Synchronous commscope shutter (SYNCHRO PUR)

Hasselblad 500 c/m: b, 1 to 1/500 seconds.

CONTAFLEX Super B Synchronous CommScope Shutter Zeiss Yikang Zeiss Super Kontha B, CONTAFLEX Super B Degree Ring: b, 1, 1/2, 1/4,1/8,65438+.

Countess Zeiss Economics, come on, shutter, shutter.

For example; Zeiss Icahn Tessa: Degree period: b, 1, 1/2, 1/4, 1/8,11... > >

Question 3: The shutter of the camera is 1/ What does this mean? Fraction refers to the shutter speed of the camera.

A shutter, as its name implies, is like a door. If the door is open for a long time, it will receive more light; if it is open for a short time, it will receive less light. This is why there are many digital signs on the camera, such as 4, 6, 15, 30, 125 and so on. This is the speed sign of the camera. These numbers represent the denominator of a molecular formula of camera exposure time, such as 4 for shutter opening 1/4 seconds, 125 for shutter opening 1/25 seconds, 1 second for opening1second, and so on.

Question 4: What do you mean by the shutter times of SLR cameras * * * How many times do you press the shutter? Shutters are alive, but the number is limited.

Question 5: What does the shutter number of SLR mean?

The number of shutters is only a rough estimate of shutter life, and reaching this value will not necessarily break down. The real shutter life has a certain relationship with the use environment, use mode, maintenance degree and personality. There is a discussion post on Mowgli about shutter life. In my impression, one of the 400D-D cameras shot 1.4 million Zhang Cai and died, which is far longer than the official life of the tripod shutter. Of course, there are also improper use, improper maintenance or bad personality, which hang up before the claimed shutter life.

Question 6: What do you mean by how many times the shutter of SLR camera is used? The number of shutters shows the durability of this camera to some extent. Generally, the shutter times of SLR cameras in the wild are all above100000. If you are not a journalist or photographer, if you want to use100000 times or more, your camera may have become an antique machine.

Question 7: What does the shutter speed of the camera mean? These two are perfect for beginners! Their shutter speed is the slowest slow door b (that is, holding the shutter. How long can you press it? How long does he have exposure) and then 30 seconds. The fastest shutter is 4000/ 1 sec. It's enough for beginners! Professional machine is the fastest shutter at 8000/ 1 sec. In fact, we don't need such a fast shutter in our daily life. Unless you are a professional photographer, shoot bullets, light and other professional photography!

Question 8: What does the shutter speed of the camera mean? The shutter speed of the camera indicates the time that the shutter remains open when the camera is shooting.

For example, the shutter speed is1100 second, which is the time when the shutter is open1100 second when shooting. During this period, the image formed by the lens is projected on the image sensor for exposure, and finally a photo is formed.

Question 9: What do you mean by the number of shutters in a SLR camera? The number of shutters is the number of shutters, indicating how many times the shutter has been pressed and how many photos have been taken.

If you are asking about the shutter speed, then this is the shutter speed.

For example, one thirtieth, which is one thirtieth of a second.

Question 10: What does the camera shutter1125 seconds mean? What is 1 and what is 125? 1 125 seconds means 1 second of 1 25 ...1second of1second.

That is to say, the shutter opening 1 sec is one fifth of 125 sec. During this period, the exposure is completed.