Originally posted by Rupert Can someone explain how they would calibrate a lens...without the lens! When I get my eyes checked, it is mandatory that I bring my eyes with me....never been asked to just bring my body and leave my eyes at home?
Maybe I am missing something...if so, what is it?
Regards!
Rupert,
Knowing that most lenses come pretty well calibrated when they leave the lens manufacturer (there are some exceptions of course) the camera repair man assumes correctly that the fault is to be found with the camera. All the camera repair person has to do now is to attach a known perfectly calibrated lens and works back from there. If there are discrepancies it will have to be the camera. If not it is the lens. If both lens and camera are faulty, where do you start to adjust, therefore it is better to start without the complainants lens(es).
I like your "eye" checkup scenario, but wait there is another example to be considered here. What about people with false teeth? The can send in their dentures in a postal Jiffy bag for a checkup and service without sending in their mouths as well.
Greetings