How to set the value between ISO and shutter of SLR

ISO, shutter speed, aperture, and exposure compensation are all different devices that control the exposure system of the camera. On the whole, their adjustment principles are all allocated based on the principles of measurement and exposure systems.

ISO: For adjustment, generally use ISO100 under bright outdoor light during the day. As the light becomes darker, you can use ISO200-ISO800. If you do not use flash for indoor shooting, you can relatively increase the sensitivity and ensure the shutter speed. Sensitivity is not a fixed setting value and can be set according to specific light and shade requirements.

Shutter speed: The shutter is adjusted according to the value given by the metering system and the aperture. Under the same exposure, the larger the aperture, the faster the shutter speed. On the contrary, the smaller the aperture, the slower the shutter is required. .

The speed of the shutter speed will affect the blur of the image. The faster the shutter speed, the more it can solidify high-speed moving objects. On the contrary, the slower the shutter speed, the more blurry the moving objects can appear.

Extended information:

Camera parameters:

Shutter speed - in fact, it is the time from opening to closing of the shutter. Just think about it: shutter speed If the value is small, the shutter is open for a short time, so the amount of light coming in will naturally be small, and the amount of light read by the photosensitive element will naturally be small;

On the contrary, if the shutter speed value is large, the amount of light read by the photosensitive element will naturally be small. The amount of light read is also greater. Shutter speed is generally expressed as 1/100s, 1/30s, or 2s.

Aperture (value) - There are many lenses in the lens, and the light can penetrate to the end, and the multiple metal blades hidden in a certain position of the lens (after being closed) can control the light on the lens. The amount of entry.

We know that if the aperture (can be thought of as the size of the circular hole surrounded by the aperture blades that light can enter) is larger, more light will enter; conversely, if the aperture is smaller, less light will enter.