So I’ve read through everything I could find…even the step by step Pix4D official tutorial and can’t get cameras to calibrate. I gave one 5 manual tie points with at least 4 tiep oints to each (three had between 10 and 20) and the CALIBRATE button is still greyed out. This is one thing I really will need to work if I am to invest in this software. Could someone maybe tell me what I am doing wrong because I am guessing it is user error but I have tried about half a dozen times now with different cameras and projects and just can’t seem to work it out. Maybe if there is a video tutorial that I can’t find a url would be good…or any advice really.