ISO sensitivity

ISO sensitivity refers to how sensitive a camera's sensor is to light. Lower ISO values (like 100 or 200) are less sensitive, producing clearer images in bright conditions. Higher ISO values (such as 1600 or 3200) increase sensitivity, allowing you to shoot in darker environments without a flash. However, higher ISO can introduce noise or graininess into the photo. Adjusting ISO helps balance exposure, so you can capture well-lit images in various lighting conditions without sacrificing image quality.