Without calibration do you know you are in spec?
If I bought a car and 5 min into driving it tells me that the camera system is defective you are not gonna have a happy customer.
If I bought a car and 5 min into driving it tells me that the camera system is defective you are not gonna have a happy customer.
If there was an issue with the camera system it could be caught at that time.
Take the other example then: "pre flight calibration when one first takes it out of the box".