Focus peaking is a manual focusing aid available in many modern digital cameras, particularly mirrorless models. When activated, focus peaking highlights the edges of the highest contrast areas of the scene with a bright color overlay, indicating where the focus is sharpest. This feature is especially useful in situations where precise focus is critical, such as macro photography or videography. It enables photographers to see in real-time which parts of the image are in focus without relying solely on the viewfinder or screen's resolution. Focus peaking is customizable in many cameras, allowing users to select the highlight color and sensitivity level that best suits their needs.