Notes about the NNR file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The NNR file type is primarily associated with 'Nikon Capture' by Nikon Inc.. Nikon Capture allows you to make fundamental and subtle adjustments to your Nikon Electronic Format (NEF) files-without compromising the original file's integrity.