The ISO range of the camera is typically a range of sensitivity settings that affect how the camera sensor captures light. It is measured in numbers, such as ISO 100, ISO 200, ISO 400, and so on. A wider ISO range allows for greater flexibility in shooting in different lighting conditions. For example, a camera with an ISO range of 100-6400 will have better low-light performance than a camera with a narrower range of 100-The higher the ISO number, the more sensitive the sensor becomes to light, but this also comes at the cost of increased noise in the images. It is important for photographers to choose the appropriate ISO setting based on the available light and desired image quality.