Affinity Photo has full support for 32-bit float editing, including import/export for OpenEXR and Radiance formats. Compared to 8-bit or 16-bit, 32-bit presents an unbounded colour space that can contain a vast amount of tonal information. This means the information can be modified to extremes without losing fidelity or accuracy. For example, highlight detail blown out by an adjustment or filter can be recovered even after successive operations.
Popular uses for 32-bit editing include: