How to set shutter priority?

Shutter priority is a professional term for photography. How to set up and use it? Let's have a look.

Shutter priority (English: Shutter priority, usually represented by the letter S or Tv on the camera) In the shutter priority mode, the photographer can manually define the shutter speed, and the automatic metering system of the machine will calculate the exposure value, and then automatically decide how much aperture to use according to the shutter speed you choose. Shutter priority is mostly used to shoot moving objects.

Suitable for occasion

Shutter priority is mostly used to shoot moving objects, such as sports, moving vehicles, waterfalls, flying objects, fireworks, water droplets and so on.

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Many friends find that when shooting moving objects, the subject is often blurred, mostly because the shutter speed is not fast enough. In this case, you can use the shutter priority mode, roughly determine a shutter value, and then shoot. And the motion of the object is generally regular, then the shutter value can also be roughly estimated. For example, the shutter speed for photographing pedestrians is only1125 seconds, while it takes11000 seconds for photographing falling water droplets.

operational approach

Setting method

Aperture priority is the opposite. Shutter priority is to manually define the shutter value of exposure, and the camera will determine the aperture size according to this shutter value. Set the camera dial to S, or set the exposure mode to S in the menu, which is the shutter priority function.

In the shutter priority mode, the camera will automatically adjust the aperture f value to the normal exposure level according to the shutter speed value set by the photographer. Shutter priority mode is usually used for? Hey? For moving objects, priority should be given to grabbing dynamic images.

For Sony F/H series cameras, the shutter priority mode setting steps are: first, put the digital camera? Mode knob? Open? s？ When the letter rotates to the position opposite to the power indicator, the camera is in the shooting state of shutter priority; By turning the shutter on the right? Button? You can increase or decrease the shutter speed. The change of shutter speed setting is visually displayed on the LCD screen.

For Canon cameras, right? Mode knob? Open? Television? When the letter rotates to the position opposite to the power indicator, the camera is in the shooting state of shutter priority. Press the select button on the back of the camera? Settings? Or? Okay？ , you can change the setting of a specific shutter speed.

Due to the different brands and models of digital cameras, the specific operation of selecting shutter priority mode and setting shutter speed is slightly different, and so is the screen display. Please pay attention to reading the relevant contents in your camera manual.

Speed selection

Increasing or decreasing the shutter speed can not only adjust the exposure, but also have different effects when shooting dynamic objects with different shutter speeds. The advantage of using high-speed shutter is that it can overcome the interference of camera vibration and object motion, make it fast, and make the fast-moving subject instantly fixed; The disadvantage is that when adjusting the shutter speed, factors such as aperture size and exposure compensation should be considered, because high-speed shutter will reduce the amount of light entering and the film will be dark, especially for indoor shooting. Setting a relatively slow shutter speed and following the shooting (panning) method can make the picture have a strong dynamic effect; However, if the shutter speed is too slow, the slight shaking when holding the camera will lead to blurred images.

In general, what is the shutter speed to prevent hand shake? 1/ lens focal length (seconds)? This is an empirical value, also called safety shutter. For example, the camera of 135 uses a lens with a focal length of 85mm, and the shutter speed that can effectively and clearly shoot the subject should not be lower than 1/85 seconds. By analogy, when the focal length of the lens is 200mm, the shutter speed should be set above 1/200 seconds. It should be noted that if a common digital camera (DC) or a non-Quan Huafu digital SLR camera is used, the focal length should be converted to that of 135 camera. For example, when a 50mm lens is used on the Canon EOS 400D, the safety shutter is 1/(50? 1.6)= 1/80 seconds. Moreover, the safety shutter will generally improve the success rate of shooting, but the photos taken at a shutter speed lower than the safety shutter may not necessarily fail.

The shutter speed of the camera was originally only one of the means to control the exposure, but if used properly, it can also achieve special photographic effects? Secret weapon? . So? Shutter priority? The setting and application of photography is also one of the most basic skills of photography. If we want to shoot moving scenes, should the shutter speed be faster or slower? This is not absolute, the key is to see what creativity to show.

If the subject is doing a series of rapid movements, we can choose to slow down the shutter speed if we want to show its movement. Because the shutter speed is too fast, it can only take a moment of static action, just like the freeze frame in the film and television, which can't reflect that kind of dynamic feeling.

However, freeze-frame is also a kind of beauty. If we freeze a moving object into a beautiful picture, it is also a good photo.

The setting of high-speed shutter is suitable for capturing dynamic objects. When capturing fast-moving people, it is suggested that the hand-held camera should track the subject forward, so that the subject is always in the best position in the picture. In the meantime, keep it? Half-press the shutter? State, so as to press the shutter in time at the best time.

influencing factor

The quality of the photo is related to the exposure, that is, how much light is needed to make the ccd get a clear image. Exposure is related to light passing time (determined by shutter speed) and light passing area (determined by aperture size).

Then, in order to get the right exposure, you need the right combination of shutter and aperture. When the shutter is fast, the aperture will be larger; The aperture is smaller when the shutter is slow.

Shutter priority means that the exposure value is calculated by the automatic metering system of the machine, and then the aperture is automatically determined according to the shutter speed you choose.

Aperture priority means that the exposure value is calculated by the automatic metering system of the machine, and then the number of shutters is automatically determined according to the aperture size you choose.

Manual mode means that you specify the aperture size and shutter speed yourself.