Ylivalottuminen

Ylivalottuminen refers to the phenomenon where a photographic sensor or film is exposed to more light than it can adequately capture. This results in a loss of detail in the brightest areas of the image, often appearing as pure white or "blown out" areas. On digital sensors, this overexposure saturates the pixels, meaning they cannot record any tonal information beyond a certain point. In film photography, it leads to a similar loss of detail in the highlights. The extent of ylivalottuminen is often measured in stops of light, indicating how much over the correct exposure the image is. Different types of sensors and films have varying capacities to handle overexposure before significant detail is lost. Modern digital cameras often incorporate features like highlight warnings or zebras to help photographers identify and avoid ylivalottuminen during shooting. Post-processing techniques can sometimes recover some lost detail in moderately overexposed areas, particularly with RAW image files, but severely ylivalottunut areas are usually unrecoverable. It is a common mistake for beginners and can be caused by incorrect camera settings, challenging lighting conditions, or a failure to properly meter the scene.