Nikon posted a new firmware update for AF-S NIKKOR 300mm f/4E PF ED VR lens. According to Nikon, some of this lens may exhibit noticeable blur issue. Below is detail issue from Nikon:
Firmware update details
We have confirmed that when the AF-S NIKKOR 300mm f/4E PF ED VR lens is used with the D800, D800E or D810, images captured at shutter speeds of around 1/125 s with the VR function enabled (NORMAL or SPORT) sometimes exhibit noticeable blur.
To reduce the occurrence of this, we will offer a service for updating your AF-S NIKKOR 300mm f/4E PF ED VR firmware.
When cameras other than the D800, D800E or D810 are used, this firmware update is not needed.
Identifying lenses with which the firmware has already been updated
Firmware for lenses with a serial number of 205101 or later have already been updated.
How to updating lens firmware
Users of the D800, D800E, or D810 who are concerned about this issue may take or send their lens to an Nikon Service Centre, where your lens firmware will be updated free of charge.
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