10 shutter speed essential knowledge

You should have heard the term "exposure iron triangle": aperture, shutter and ISO are the basis of photographic exposure. For beginners of photography, they may often pay attention to aperture and ISO on the premise of A-mode aperture, but they don't know much about shutter. Let me share 10' s necessary knowledge about shutter. How many do you know?

First of all, the shutter speed is in seconds.

Most students should know this, right? So when you tell others about your shutter speed, remember to say 1/250 seconds instead of 1/250 seconds. When you display 250 seconds in the camera, remember to say 1/250 seconds instead of 250 seconds. If it is equal to or greater than one second, the camera usually displays 2 ",which means" ".

Second, the safety shutter

Many times, you will clap with your hands. If your camera or lens has no anti-shake function (such as IS, VR, etc. ), you should pay attention to whether the shutter meets the "safety shutter"! Photos that don't meet the safety shutter may be blurred by hand shake, so be sure to pay more attention when shooting!

Safety shutter = 1/ focal length

However, in the case of hand-held shooting, the slowest shutter cannot be slower than 1/60 seconds. That is to say, even with a 35 mm lens, the safety shutter is not1/35s, and the shutter speed should be above1/60s.

Third, if you really need a low-speed shutter, please use a tripod.

A tripod is very helpful to us, except for the lack of light. Even during the day, we will use a tripod, such as taking a waterfall with a slow door. With the slow shutter, you can shoot various creative themes such as starry sky, car track and running water!

When shooting in poor light at night, we can also use slow shutter and low ISO to improve the quality of photos.

Fourth, the shutter speed is increased by one level, the aperture is increased by one level, and the exposure is the same.

Especially when shooting in manual mode, the shutter speed is increased by one level, the aperture is increased by one level, and the exposure is the same. You can use this rule to adjust the aperture shutter value without recalculating the exposure!

5. Shutter speed has a maximum value, but there is no minimum value.

For a general camera, the highest speed of the shutter can reach 1/4000 seconds or even 1/8000 seconds, which is enough to solidify things that move faster, such as splashing waves and racing cars. The maximum speed of the shutter is limited. The slow shutter can be set to 1 ",5", 30 "or even use the B door, so that the shutter will remain open until you control the camera to close the shutter. Gate B is very useful when shooting long exposure subjects such as star tracks, fireworks and traffic.

6. If shooting moving objects, the safety shutter should be improved accordingly.

When your subject will move, such as a runner or a child playing, the minimum shutter limit can't just meet the safety shutter. You need to increase the shutter speed according to the situation at that time, but at the same time, you should also pay attention to increasing the aperture or improving the sensitivity to achieve the same exposure.

Seven, shoot with the slow door during the day, with the subtraction mirror.

For example, when there is enough light during the day, we want to use a slow shutter to atomize the waves on the water surface. Using a slow shutter will overexpose the photo, even if the aperture is the smallest and ISO is the lowest, it will not solve the problem. At this time, the best way is to use a dimming filter, which can reduce the light entering the lens, so that we can extend the opening time of the shutter. A dimmer combined with a slow shutter is usually used to photograph people, waterfalls and other subjects.

Eight, the high-speed shutter can be cured.

Shutters with relatively high speed, such as11000 seconds and 1/2000 seconds, can solidify fast-moving objects and are often used to photograph athletes, birds, cars and even airplanes. A slow shutter can shoot motion.

Nine, the slow shutter can shoot dynamic.

When the subject is in motion, using slow shutter or chase can make your photo full of motion, but slow shutter is also very easy to cause the problem of blurred subject, so be careful again and be sure to get on a tripod if necessary. The longer the focal length, the higher the shutter speed.

X the longer the focal length, the higher the shutter speed.

When we use telephoto lenses, such as 200mm, 400mm, etc. If we shoot by hand, a slight hand shake will lead to blurred photos, so we need to increase the shutter speed as much as possible, and it is best to determine the safe shutter speed according to the light conditions at that time.

Tipe: shutter speed commonly used by professional photographers

As shown in the figure, the relationship between exposure and shutter speed is very direct. Faster shutter speed means less light reaching the camera sensor, while faster shutter speed means more light reaching the sensor.

It is very important to use the correct shutter speed to shoot moving objects. When shooting a moving object, the shutter speed directly affects the clarity of the object.

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