What is a common drawback of using high ISO settings?

Using high ISO settings is generally associated with increased digital noise in images. When the ISO setting on a camera is raised, the sensor becomes more sensitive to light. While this allows for better performance in low-light conditions, it also amplifies not just the signal from the light, but also the noise present in the image. Noise appears as random variations of brightness or color, often detracting from the overall quality of the photograph.

The increased noise can be particularly problematic in images that require a lot of detail and clarity, as it can create a grainy texture that overshadows finer details, especially in shadow areas. This effect is more pronounced at significantly high ISO settings, where the amount of noise can become quite noticeable and can degrade the overall image quality.

Understanding this characteristic of high ISO settings is crucial for photographers who need to balance exposure, motion, and noise in their images, especially when shooting in challenging lighting conditions.