Shutter Priority is a camera mode that allows photographers to set the shutter speed while the camera automatically adjusts the aperture to maintain proper exposure. This mode is useful for capturing fast-moving subjects or creating motion blur effects, as it gives the photographer control over how motion is represented in the image. In Shutter Priority, the photographer selects a specific shutter speed, such as 1/500th of a second for freezing action or 1/30th of a second for blurring movement. This mode is commonly found in both DSLR and mirrorless cameras, making it accessible for various skill levels.