A new service advisory for the D750 DSLR has ben issued by Nikon, warning that some cameras may have a shutter defect that causes shading in a portion of photos. This notice comes half a year after a flare issue warning by the camera company.

Nikon says that affected cameras were manufactured between October and November 2014.

The shutter on certain cameras made in that window "may not function properly sometimes resulting in a shading of a portion of images taken."

Nikon is offering free repairs to owners of affected cameras, regardless of whether or not the original warranty has expired.

You can check to see if your D750 is one of the potentially affected units by finding its serial number and entering into the Nikon service advisory website here.