Pix4Dmapper reads information from the image EXIF data. It reads both standard EXIF tags and Pix4D defined Camera XMP tags. For more information:
Some tags are required in order to be compatible with Pix4Dmapper:
The following standard tags must be present in the EXIF data:
Projects which require radiometric calculations (e.g. agriculture applications)
Please refer to the Camera XMP page as well as this page which gives the specifications for the different corrections to be applied: 115001846106.