Hello @jhfr59, Regarding the setup and the use of the reflectance panel, I would recommend you to go through the below video.
Regarding the reflectance panel, PIX4Dfields supports the following reflectance targets: So, you could use any of the below panels.
- Airinov Aircalib
- Parrot
- MicaSense Calibrated Reflectance Panel
- Sentera
For more information on radiometric correction, visit the below support article