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Message: <blockquote data-quote="alfaholic" data-source="post: 369490" data-attributes="member: 13066">My previous camera was D7000, and it was calibrated by Nikon service once because my 35mm suddenly stopped to autofocus correctly. After calibration everything was fine, the camera and all my lenses were perfect, if I remember well they calibrated camera and 35mm lens. My other lenses were fine.When I bought my new D7100 one month a go, I tested it with my two lenses, Sigma 17-50 and Nikon 35mm, and both were perfect, finally something that works out of the box. Hmmm... But, one week a go I returned my 35mm to Nikon because my focus motor was very noisy and squeaky, so Nikon replaced AF motor. After that repair my 35mm was off again, I needed to put AF adjustment to +15 in order to focus as it should, so I went to Nikon service again, they checked my camera, it was fine, so they will look at my lens again.Today they called to tell me that my lens is ok, they do not see anything bad with it, so I tested again my D7100 and Sigma and suddenly AF is off by +20 on AF adjustment. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused    :confused:" loading="lazy" data-shortname=":confused:" />I am so confused... I am very careful with my gear, so it is impossible that I did something somehow, but something is wrong.Do all camera bodies and lenses need to be calibrated after purchase, or this is just in my case?Is this normal, or all lenses must be compatible with all camera bodies after purchase, and without need for calibration?</blockquote>

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