The shutter speed is a component in the camera that allows the light to enter the camera for a fixed period of time The closure of the camera is always closed until the full button is pressed, preventing the light from reaching the camera sensor until you are ready to take the picture and expose it to light. The longer the duration of the closure, the longer the light will reach the sensor, while the shorter the duration of the time, the less light will enter the sensor. Ig the environmental light is strong, you will have to choose a relatively high value of shutter speed, which will limit the input of light, on the other hand, under low light conditions, you will need to choose a low shutter speed, which means that the closure is left open for a longer period of time, allowing more light to enter the camera and the sensor.
Examples of common values for shutter speeds are: 1 / 250s, 1 / 125s, 1 / 60s, etc. Here, too, changing the speed of one “station” will have an effect on the amount of light that will reach the sensor: a rise in speed in one “station” will reduce the amount of light reaching the sensor at half and a drop in one “station” (i.e., For example, once you change the shutter speed from 1/30 to 1/60, the result will be to reduce the exposure time of the sensor to half, and in the opposite case, change the shutter speed from 1/125 to 1/60 , this means more light will reach the sensor the sensor, that is, an increase in one station in terms of exposure.
In automatic cameras, common values for shutter speed will be 1 “, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250 1/500 seconds and so on. In some of the advanced cameras you can set the values of half or three stations for more precise direction.
Changes in shutter speed will affect several factors:
- Control the amount of natural light entering the camera by short or long exposure time of the sensor. It is important to remember that if you use the flash in the photo, the area you shoot with (the foreground) will not be affected by changes in the frame speed, only the part of the background – illuminated by the natural light – will be affected.
- Freeze movement – The faster the shutter speed is, the faster occurrences you capture will be “frozen” and sharp, without the feeling of smell that can result from choosing too fast a shutter speed. The freezing of traffic to use the flash also plays an important role.
3 – High shutter speed will prevent vibration of the camera. The rule of thumb says that in order to prevent a camera shake that causes a blurry result in underwater photography, you have to choose a speed that is at least as good as the focal point you are taking at the same time. For example, if your lens is currently 100 mm in focal length, to avoid vibration you will need to choose a shutter speed of 1/100s or more. In flash shots, the shutter speed you choose can be slightly lower, because the flash freezes movement. There are certain situations where you will want to consider a much lower shutter speed than the above finger rule in order to achieve unusual results.