What is ISO?

What is ISO?

When you change your ISO setting  you're adjusting your camera's sensitivity to light (which can be anywhere from 24 to 6,400). This is the most important part of the camera  because it is responsible for gathering the light and transforming it into an image. If you were to use a higher  ISO number, the level of sensitivity will increase. However if you were to lower the ISO number, the level of sensitivity will decrease. Higher sensitivity is expensive but with increased sensitivity, your camera sensor can capture images in low-light environments without having to use a flash. without a flash your camera may take too long to shoot, resulting in images that are blurry and out of focus.  Alternatively, a photographers  option is to increase the ISO number to 800 or higher. Some photographs are intentionally grainy/blurry to help create mood in a scene.