The 32-bit Preview panel provides configurable exposure and gamma controls to preview the vast tonal range of a 32-bit document without tonally modifying it. This is especially useful for floating point lossless workflows (e.g., 3D rendering), where edits need to be made to the image without sacrificing the available tonal range through tonal compression or adjustments.
About the 32-bit Preview panel
The panel options include:
Exposure—increases or decreases the preview exposure of the image, allowing you to better visualise the highlight or shadow tonal ranges for editing.
Gamma—alters the gamma correction value.
Display Transform—(OpenColorIO option) allows you to switch between a Linear RGB colourspace, unmanaged, or a display transform to a different colourspace:
ICC Display Transform—transform using the monitor's assigned ICC profile.
Unmanaged—no transform is applied.
OCIO Display Transform—choose an output profile to preview your document with this colour space. Generally you want to match this with the display profile of your panel (e.g., P3 or Rec.2020 for specifically profiled monitors).