What does the camera's lso mean?

ISO is a very common concept in photography. Simply put, ISO is a manifestation of photosensitivity. The higher the image sensitivity, the stronger the sensitivity, that is, the higher the ISO value, the brighter the photo. Generally speaking, when shooting indoors, you can raise the ISO of the camera, which can improve the brightness of the photos. It should be noted that although the ISO is high, the photos will be brighter, but there will be some "noise" more or less, so how many ISO values to choose depends on the specific situation.

ISO is not only a factor that affects the brightness of photos, but also closely related to shooting parameters such as shutter speed and aperture value. For example, if you are shooting motion in the sun and need a fast shutter speed, you should increase the ISO value to ensure that the shot is brighter. Under flash lighting, ISO should also be set to a suitable range, otherwise it will be too dark and too bright.

ISO is also related to the later stage of shooting. Anyone who knows about post-production knows that it is a common operation to adjust the brightness of photos in post-production, but if the ISO value of photos is high enough, there is no need to adjust too much, and post-processing will be relatively simple. It is worth noting that ISO is only one of the factors that affect the brightness of photos. Only when it is used with various hardware devices such as camera lens and camera sensor can we achieve a more carefree and complete photographic effect.