The Develop Persona is the environment for processing raw images in Affinity Photo.
The tools presented vertically down the left of the workspace are a small subset of editing tools available from the Photo Persona. Some other areas of the workspace pertinent to this Persona are the Commands Menu and Studios.
The Commands Menu differs between Personas—the list of commands are context sensitive to the currently active Persona, and support the Persona's way of working.
For Develop Persona, the commands available let you synchronise between before and after Split views and view clipped regions that require attention during raw processing.
This Persona offers unique Studios that are designed for powerful raw image development. Studios allow you to control exposure/white balance, colour, tone, noise, lens issues, and apply overlays for adjusting only specific areas.