Depends on the cmm... You have to calibrate the probe on the sphere, then calibrate the ring with the probe ( answer "yes" to "does the tool moved"), then calibrate the camra (answer "no" to "does the tool moved". Then, the offsets are calibrated, not the optic... For the optic, there is a special tool, but it depends on the camera and the CMM.
Depends on the cmm... You have to calibrate the probe on the sphere, then calibrate the ring with the probe ( answer "yes" to "does the tool moved"), then calibrate the camra (answer "no" to "does the tool moved". Then, the offsets are calibrated, not the optic... For the optic, there is a special tool, but it depends on the camera and the CMM.
