What's the use of shutter and aperture ratio?

1. In order to reduce the camera vibration, the common shutter speed is1125 seconds. Higher shutter speed 1/250 seconds can take quite clear photos. If the telescope head is used, it must be equipped with a higher shutter speed, but at this time, the aperture must be opened larger than normal to obtain a suitable exposure. Remember, when you press the shutter button, try to keep your camera smooth even if you use a higher shutter speed.

2. Seize the action. 1125 second shutter speed can capture people's walking movements. Of course, when you use a higher shutter speed, you can capture a slightly faster movement, such as a runner. When you use a higher shutter speed, you must use a larger aperture to keep the same exposure. For example, when the film is used in sufficient sunlight, the combination is1125 seconds and f/ 1 1, then another combination of shutter speed and aperture for obtaining the same exposure can be 1/250 seconds, f/8 or/kloc-.

3. Depth of field control. While maintaining the correct exposure, the sharpness or depth of field can be increased or decreased by using a larger or smaller aperture and an appropriate shutter speed. The larger the aperture, the smaller the depth of field.

Outdoor photography exposure combination reference

Total index 2 3 4 5 6 7 8

Shutter speed112511/601/301/30.

Aperture size16111885.64.5.