For rendering with Corona you can use maps exported from Substance Painter or the Substance plugin. Corona is using the Specular/Glossiness workflow with a 1/IOR map. You will need the following maps:
- Reflection (Specular)
- 1/IOR (Converted)
Using the Corona Output Template, Substance Painter will export the converted map types needed.
Maps that represent data will need to be interpreted correctly. Please see the Color Management page for more information.