What is the relationship between "aperture", "ISO" and "shutter" in photography?

1, the shutter controls the exposure time, the aperture controls the amount of light, and the sensitivity refers to the sensitivity to light. It can be seen that the most rude relationship among the three is "light", which * * * affects whether a photo is exposed correctly, that is, they * * * determine the brightness of the photo.

2. Accurate exposure is the balance between the three. Under the premise of accurate exposure, the last thing we need to consider is sensitivity. Generally, on the basis of ensuring the safety shutter, we will combine the depth of field of the picture we want to shoot, and finally adjust the sensitivity ISO. Generally, it will not move when it is adjusted to one or two hundred.

3. People or things who want to shoot scenery or capture motion usually have shutter priority. The aperture is automatic at this time. By adjusting the shutter, you can shoot ideal effects, such as instant freeze or drag, light painting and so on.

4. Give priority to the scene and effect when taking pictures. If you want to take a portrait, you will generally use aperture priority mode. At this time, the shutter is automatic, and the ideal effect is taken through the aperture, such as the blurring of the background with small depth of field.