Nikon has updated a February 2016 service advisory notice that revealed abnormalities in the shutter in some cameras manufactured between October 2014 and June 2015.

The problems commonly caused shading in part of some images.  The company’s latest statement says: Since that time, further examination of the issue has found that the same issue may also occur with D750 cameras manufactured from July to September 2014 and from July 2015 to September 2016. Therefore, any D750 manufactured from July 2014 to September 2016 is eligible for inspection and repair of its shutter.

To check whether your camera is one of those affected by this issue, owners of D750 cameras are asked to enter the serial number in the textbox on the service advisory page (http://www.nikon.com.au/en_AU/service/service_advisory/d750-shutter-issue) and click the  Verify Serial Number  button. If the camera is affected, owners should contact the nearest Nikon service centre to arrange for the problem to be fixed.  They will keep your camera, and examine and repair the camera’s shutter free of charge, even if the camera’s warranty has expired, Nikon explains. Inquiries regarding this issue may also be directed to your nearest  service center.

According to Nikon guru, Thom Hogan, It’s looking like all the shutters Nikon got for the first two years of production are suspect now.  You can read his analysis of the issue at http://www.dslrbodies.com/newsviews/d750-service-advisories-are.html.