Last but not least, the protocol from this method may be a good measure to preserve the value of early D800 on the used market place. Maybe, Nikon could use our method with multiple lenses to document the performance of a camera after servicing for affected customers. Therefore, such a check may now be advisable with multiple lenses. There are more recent rumors that Nikon may meanwhile have dispatched a service procedure to more reliably fix the issue in service. Furthermore, without a statement from Nikon there remains substantial doubt that a camera 'fixed' in service (e.g., calibrated for every AF focus point sensor) performs as well as a camera which was manufactured according to standards in the first place. Especially as Nikon remained silent about the issue and returned many cameras sent to service 'as fixed' while further inspection revealed they're not. Unfortunately, such a check seems to have become suitable after it is now possible that many such cameras manufactured so far (Aug 2012) suffer from bad functioning left AF sensors. More about this has previousy been published here: In fact, this paper contains examples for two Nikon and one Canon camera.ДЄ main purpose of this paper is to check if a Nikon D800, D800E or D4 are working as advertized.

It can be used for almost any camera with a phase AF system, i.e., SLRs and SLTs. This technical study describes a method for checking if a camera's entire AF sensor array works as advertized.

Reikan focal accuracy