Clock speed refers to the rate at which a computer's processor completes a single cycle of operations. It is usually measured in megahertz (MHz) or gigahertz (GHz), representing millions or billions of cycles per second. In photography and digital imaging, clock speed affects how quickly software can process large image files, apply filters, or render high-resolution images. A higher clock speed generally results in faster performance when editing photos, batch processing, or running complex imaging applications, making it an important consideration for photographers working with digital workflows.