Question about reflectance correction

[ielab_inha]

In pix4d’s log there are
[ Calibration target derived sensitivity correction: 0.627938 ]

Is this part performs reflectance correction after radiometric correction?
If not, where does the reflectance correction using the calibration target occur after radiometric correction

[momtanu.chakraborty]

You are right, at this part we do the rdaiometric correction using the targets/panel. All of these take part in step 3 (reflectance map generation)