What is the function of shutter?

Question 1: What is the function of shutter? The distance between lens groups will change to achieve the purpose of clear focus.

Aperture: Adjust brightness.

Shutter: Adjust the exposure speed.

Focus ring: adjust the focal length.

A "stupid camera" has an aperture and a focus ring. Right inside the fuselage, automatic adjustment!

Question 2: What is a shutter? What is the function of shutter? Shutter is a mechanical device used to control the exposure of camera photosensitive element or film. Louvers are made of metal, fabric or other synthetic materials. The opening time of the shutter is controlled by a mechanical or electronic mechanism and driven by mechanical or electrical energy. According to the camera type, the shutter is divided into inter-mirror shutter and focal plane shutter. Inter-mirror shutter, also known as back mirror shutter and aperture integrated shutter, is mainly used for portable cameras and some 120 lenses. Focal plane shutter, also known as curtain shutter, is mainly used for SLR cameras. According to the driving mode, it can be divided into electronic shutter and mechanical shutter. The electronic shutter controls the shutter opening time by controlling the shutter coil magnet through the circuit, and the gears and linkage parts are mostly made of plastic. At present, most digital cameras and AF optical cameras are electronic shutters. The mechanical shutter is driven by a gear to control the opening time of the shutter. Connecting rods and gears are mostly made of copper and iron. In the past, manual cameras basically used mechanical shutters. The former is easy to be destroyed by wind and sand, and the latter is also afraid of wind and sand erosion, but it is clean and convenient. The working principle of the shutter is as follows: in order to protect the photosensitive element or film in the camera from exposure, the shutter is always closed; After the shutter speed is set, as long as the shutter release button of the camera is pressed, the camera will let the light passing through the lens make the photosensitive element or film in the camera get the correct exposure within the time when the shutter is opened and closed.

Question 3: What is the main function of shutter? When the shutter is opened, the light is sensitive to the photosensitive software, forming an image. If the opening and closing time is short, moving objects will condense into clear effects, such as splashing water droplets. If it takes a long time to open and close, then the moving object will leave a moving track, such as the track left by the car light, the track crossed by the stars, the waves turn into clouds, and the waterfalls become filaments.

Question 4: What is the function and effect of shutter speed? There are several parameters that must be thoroughly understood. They are shutter, aperture, ISO, focal length and hue. The use of shutter requires the cooperation of other parameters. Generally speaking, shutter refers to the length of exposure time. Different exposure times will produce completely different effects, such as:

1 high-speed shutter, about 1/400~ 1/2000, which can shoot sports themes or similar themes. For example, football, racing, children running in the sun and so on. This shutter speed range can freeze high-speed moving objects;

2 low-speed shutter, about1~1100. Shutter speed in this range can capture the dynamic effect of moving objects, similar to a wire drawing effect, such as racing cars, which can capture the visual blur in motion and is very dynamic. Of course, the swing technique can also be used to reflect the speed of the car. Of course, it is no problem to shoot some static subjects within this shutter interval;

Ultra-low speed shutter, with a length of about seconds, is suitable for shooting light paintings, night scenes and street scenes, and is very creative;

4B door, the most commonly used is the star track.

Shutters with other speeds also have suitable themes, but this one is not completely fixed, mainly depending on the purpose of shooting and your own creativity.

It should be noted that not only the shutter, but also other parameters should be considered when creating, and each parameter should be set reasonably on the premise of ensuring that the color tone conforms to the theme.

In addition, for long-time exposure scenes, it is also necessary to consider the noise reduction in the early or late stage.

Question 5: What is a shutter? What does a shutter do? Shutter speed is an important parameter of digital camera shutter. The shutter speed of different types of digital cameras is completely different. Therefore, when shooting a scene with a certain type of digital camera, we must first know the shutter speed, because only by considering the start time of the shutter and grasping the release time of the shutter can we capture a vivid picture. Usually, the shutter of ordinary digital cameras is mostly within11000 seconds, which can basically cope with most daily shooting. Shutter should not only look at "fast" but also "slow", that is, the delay of shutter. For example, in some digital cameras, the longest shutter is 16 second, which is enough for shooting at night. However, if the shutter is too long, it will increase the "noise" of digital photos, that is, miscellaneous stripes will appear in the photos. In addition, mainstream digital cameras must have aperture priority mode and shutter priority mode in addition to automatic shooting mode. Aperture priority mode is that the user decides the size of the aperture, and then the camera calculates how much light enters according to the ambient light and exposure settings. This mode is more suitable for shooting still objects. Shutter priority mode is that the user decides the shutter speed, and then the digital camera calculates the appropriate aperture size according to the environment. Therefore, shutter priority mode is more suitable for shooting moving objects, especially digital cameras are very sensitive to vibration. Even shaking the camera slightly will produce blurred photos during exposure, which is more obvious when using a long focal length. When choosing a digital camera, it is best to choose a model with these modes to ensure the shooting effect.

Question 6: What is the use of shutter speed? By controlling the shutter speed, that is, the exposure time, the amount of light reaching the photosensitive element (traditional camera is film) can be controlled, and the exposure of photos can be controlled by using aperture and ISO.

In addition, the speed of the shutter will also affect the imaging effect of the photo. For example, a high-speed shutter can be used to freeze objects moving at high speed, and a slow shutter can be used to photograph the dynamic effects of people or objects.

Question 7: What is the function of electronic shutter? Whether it is a traditional photographer or a digital photographer, the camera will shake and skew more or less because of the excessive instantaneous force of pressing the shutter, which will destroy the integrity of the picture. Cable release is a kind of camera that can control the camera to take pictures, and prevent the camera surface from vibrating and destroying the integrity of the picture. 2. In the early stage of the development of cable release, "air pressure mutual throwing" cable release was just a balloon connected with a catheter, and the remote shutter was pushed by pressing the balloon to achieve the purpose of taking pictures; Although this method is simple and low cost, its reliability is poor. Later, a hollow steel wire cable releaser was developed, which was closely combined with the spiral hole on the shutter of the fuselage, making the performance of the cable releaser more reliable. With the large-scale electronization of traditional cameras, even entering the era of digital cameras, the development of cable releaser is moving from single function to more complex application. Today's cable release not only triggered the shutter; Including long-time photography, interval photography, timing photography, etc. using the B shutter lock function. Even in many indoor photography, in order to avoid the pressure of the model directly facing the camera, many photographers are used to staying away from the camera body, directly guiding the model's movements, and then releasing the cable to capture the instantaneous picture. However, in the case of long exposure and stable photography, for example, cable play is the most useful auxiliary tool for telephoto and macro. Want to meet such diverse needs is not a simple mechanical cable release can bear, but must rely on electronic cable release! Electronic wire release not only includes basic settings: double design of half-press focusing and full-press starting, but also can be further controlled by electronic wire: settings such as operating exposure time and exposure compensation. However, it is annoying that today's electronic cable distribution is incompatible between different brands, even different models of the same brand are not compatible; In addition, it is not easy to obtain the original release in overseas areas outside Japan, and the price is high, which leads to the fact that photographers at this stage generally do not use release as an auxiliary tool. 3 Basic operation of the electronic wire releaser The electronic wire releaser has the function of "two-way button": the camera will focus/measure light at half the time, and the camera will take pictures at full time. The electronic cable has the function of "locking the B door": push and pull the B door button upward, and the camera will realize long-term exposure and focus when the B door button is locked. When the B-door button is reset, the shutter closes and the exposure ends. 4 Types of cable release Generally speaking, there are many types of cable release in the market, such as "mechanical cable release", "electronic cable release" and "high-end special cable release". This proves that our products are widely used, and almost all photographers will use them. In the camera, the socket for cable release is also different from USB. It can be said that the cable-released connector is the main input port and the only input end of the external auxiliary accessories of the camera in the future.

Question 8: What are the functions of aperture and shutter in photography? Aperture can control the depth of field in photography practice, thus better highlighting the theme.

The reasonable application of shutter time can effectively show the movement of objects, leave a deep impression on the audience, and concentrate and treasure fleeting moments.

Question 9: There are several forms of shutter speed. What role does it play in photography? Shutter speed and aperture are two major factors that determine photographic exposure.

In traditional cameras, especially mechanical cameras, the expression of shutter speed is usually B/2 Geng; 4/8/15/30/60/125/250/500/1000/2000 They actually mean 1/2 seconds 1/4 seconds ...

The slower the shutter speed, the greater the exposure, and the faster the shutter speed, the smaller the exposure.

The main function of shutter is to control exposure and "freeze" moving images. The faster the shutter is, the more you can grasp the instantaneous static state of the moving object. The slower the shutter is, the more it can show the motion process of dynamic objects.

I suggest you shoot some streams with different shutter speeds, and you can see the film at a glance.

Question 10: What are the advantages of a slow shutter? 1 high shutter, which can clearly shoot moving objects. For example, if the child is active, the slow shutter will blur. For example, cars, athletes, birds and objects are fast, and the shutter is fast, otherwise it will be blurred. The accurate shutter speed depends on the moving speed of the object. There are also some frozen water droplets in advertising pictures that were shot with a high shutter.

2. The special use of slow shutter, such as shooting water with 1/4 or slower shutter, will have an ethereal feeling. For example, when the camera moves with a running horse and presses the shutter in the middle of the movement, it will take a dynamic picture with a clear horse and a blurred background.

3 shooting static scenes, generally there is not much difference, digital words, too slow will increase noise.

4 cooperate with the aperture, for example, if you want to blur the background, the aperture will be large, and the shutter will be fast. If you want to shoot a large depth of field, the aperture will be small and the shutter will be slow.