US Feet or International Feet

[Gary_La_Mantia]

You might find this interesting,

https://community.pix4d.com/t/7365-Avoiding-problems-with-incorrect-Orthomosaic-elevations-using-feet-instead-of-meters-using-State-Plane-or-seeing-a-Black-pane-with-red-dots-during-processing 

My ref:

https://community.pix4d.com/t/6119-coordinate-system- 

 

And absolutely confirm Pix4D, this isn’t the first time for this question.