7 tricks to teach you how to use the shutter priority function

Lead: When picking up a SLR camera for the first time, I believe everyone will notice the English words "AUTO, m, a, s, p" on the camera mode dial, which respectively represent different exposure modes. Most of them are AUTOmatic exposure (auto) or program automatic exposure (p), or aperture priority (a). In contrast, shutter priority is relatively unpopular. In fact, if you make good use of the shutter priority mode, you can also shoot fascinating works! Deconstruct it for everyone now!

7 tricks to teach you how to use the shutter priority function

Shutter "priority"

To understand shutter priority, we must first understand what shutter and shutter speed are. As the saying goes, "Photography is the art of light. Your camera is like a magic box that absorbs light, and the shutter is a valve that determines whether and how long light enters the camera.

"S" or "Tv" in the camera exposure mode means that the shutter takes precedence.

Knowing the shutter speed and the function of the shutter will better explain the shutter priority (S mode)! Like aperture priority, shutter priority is also an early developed automatic exposure mode. When you choose the shutter first, it means that the user can choose the shutter speed first, and the camera will automatically calculate the appropriate aperture value according to the brightness of the spot according to your choice, thus completing the whole exposure process. By changing the shutter speed, you can take many beautiful photos. Here are 7 tips for using the shutter!

1 trick: shutter is the exposure time.

You can also use the speed effect of shutter speed flexibly to shoot wonderful works.

The shutter speed is different. Shutter speed is not just the speed of shutter operation. In the era of digital photography, it refers to the time when the scene is exposed to the image sensor. The era of film photography is also the era of film exposure. Simply put, it is the length of exposure time. Shutter speed is in seconds. For example, it will be displayed as numbers such as11000 and 1/60. "1000" and "60" are denominator. The larger the denominator, the faster the shutter speed and the shorter the exposure time. Conversely, the smaller the denominator value, the slower the shutter speed. Shutter speed can be as slow as 1 second, 2 seconds, 10 second, etc. , the denominator is thrown away! Because there are fast and slow shutters, the performance of high-speed shutter and low-speed shutter is different. You can choose the fast and slow shutter speed according to the needs of the theme.

The second measure: condensation action captures the moment.

Freeze the moment with a high-speed shutter.

The application of high-speed shutter can be used to condense high-speed dynamics and use telephoto lens. For example, when shooting a racing car, if you want to concentrate the movements and shapes of the subject, you need to use high-speed shutters, such as110,000 seconds and 1/2000 seconds, so you can capture the moment when the subject moves at high speed.

Step 3: Create a vague sense of movement.

The left picture was taken in 1/20 seconds, and the right picture was taken in 1/2 seconds. It can be seen that the shutter speed can produce different visual effects on some subjects.

In the shutter priority mode, the exposure time is long, that is, the shutter speed is slow, and when shooting a moving subject, the subject will become blurred and produce a sense of motion. If you want to make the subject dynamic, you can try shooting at a slow shutter speed, such as shooting water.

Step 4: "Safety shutter" to ensure quality.

The so-called safety shutter is a shutter setting that will not blur the photo because of the camera body shaking and maintain the photo quality.

Understanding the concept of safety shutter is very helpful to improve your shooting skills!

What is the value of a safety shutter? Different focal lengths have different safety shutters, and the focal length is closely related to the safety shutter. Generally speaking, the safety shutter is the principle of "1/ focal length", but different camera systems have different situations: for example, for a camera with 135 film, according to the selected focal length, for example, if a lens with a focal length of 50mm is selected, its safety shutter will be 1/50 seconds. Its safety shutter is 1/200 seconds. If you want to be safer, use a faster shutter, such as a safety shutter with a focal length of 50mm 1/60 seconds and a safety shutter with a focal length of 200mm 1/250 seconds; For APS-C cameras, the selected focal length should be multiplied by the focal length conversion factor. For example, if an 80mm lens is multiplied by 1.5, that is, 120mm, then1120 seconds is its safety shutter. If you want to be safer, you can choose the faster 65438+. Keep in mind the concept of safety shutter, which is of great benefit to your photography!

The fifth measure: tripod and shutter rope are shockproof.

If you want to shoot with the slow shutter under the safety shutter, you must use a tripod. Using a tripod can avoid the photo blur caused by the shaking of the fuselage. In the case of long exposure (slow shutter), tripod is necessary. For example, if you want to shoot running water, you should use a tripod to emphasize the dynamics of running water and make it silky. Otherwise, it will blur the fixed scenery outside the running water, such as mountain scenery and stones.

Some subjects that need to be exposed for a long time must be shot with a tripod, such as night scenes, running water or fireworks.

In addition, after using the tripod, try to avoid touching the camera to prevent shaking. At this time, you have to press the shutter with the shutter rope or remote control, or you can choose the countdown shooting mode built into the camera to shoot.

Step 6: Use the B shutter

We may need a longer exposure time for some subjects. At this time, you need to use the B shutter, such as the recent popular light painting, or astronomical shooting.

Isn't it said that there is only one shutter for each camera? The shutter speed is expressed in numbers, so what is the B shutter? Actually, b is short for "Blub". Shutter allows manual control of shutter speed. If you press the shutter button, the shutter will remain open until you release it. This function is mostly used in the case of insufficient light at night, such as shooting the light track of a car. However, at present, the shutter speed provided by many SLR and mirrorless cameras can be as slow as 30 seconds without reciprocity failure. Generally, night shooting is more than enough, and B shutter is not commonly used unless the exposure time is longer than 30 seconds.

Step 7: Pay attention to light and overexposure.

When shooting with a slow shutter, you should pay attention to the light situation at the scene. For example, in the case of sufficient natural light, overexposure is easy to occur when shooting the dynamics of waterfalls outdoors at a slow shutter speed. The solution is to try to avoid shooting in a place with abundant natural light, find a place with less light, and try to avoid shooting the sky when composing. If it is cloudy that day, don't shoot works with slow shutter speed outdoors. If necessary, it can be equipped with a dimming filter for long exposure.

Camera and lens shockproof system

In fact, the technology of safety shutter is "traditional" to some extent, because many cameras or lenses already have optical shock-proof function! At present, there are two kinds of optical shockproof functions, namely, body shockproof and lens shockproof. The second is that the fuselage can be shockproof with different lenses, and it can also have shockproof function. However, the lens shockproof system must use a lens with shockproof function to obtain shockproof effect. Through the shockproof system, we can shoot at a shutter speed lower than the safety shutter, and we can also get a clear image. At present, the shockproof system can provide 3 to 4 levels of shockproof effect. For example, we need a security shutter of1125 seconds when shooting. If the shock-proof system can achieve the effect of level 4, theoretically, even if the shutter speed is 1/8 seconds, we can still take a clear image!