It provides a better "preview" on the back of your LCD and serves as a default starting point in Canon’s Digital Photo Professional (DPP) . Top Sources for Free Canon Picture Style Downloads
Downloading free Canon Picture Styles can be a great way to enhance your JPEGs or in-camera color grading without editing each photo. Many third-party sites offer unique styles (vintage, cinematic, landscape punch) that aren’t in Canon’s official set. Free Download Picture Style Canon
In technical terms, a Canon Picture Style ( .pf2 or .pf3 file) is a set of parameters that instructs the camera’s image processor how to interpret raw sensor data. The key adjustable parameters include: It provides a better "preview" on the back