The focal length that we input with our ORIMA camera file (CAMEDIT) is different than the focal length that I see used in ORIMA, such as is reported in the printout.0 file.
ORIMA converts the USGS distortion values into the distortion values used by CAP-A. Please review the CAP-A manual. This conversion transforms the term K0 into a correction of the principal distance. Therefore the principal distance listed in the printout.0 file of CAP-A differs from the value as entered in CAMEDIT focal length.