What is an NKSC file? An NKSC file is a metadata file created by Nikon Capture NX-D, a Nikon camera RAW image processing application used to edit .NEF and .NRW images. It contains a record of the edits made to a RAW image. Nikon Capture NX-D saves edits in NKSC files so you can retain the original, unedited copy of your RAW image.

More Information Nikon digital camera users can download and use Nikon Capture NX-D to process the RAW images their camera produces. When a user makes one or more edits to an image in Capture NX-D, a record of those edits is automatically saved as an NKSC, or Nikon sidecar, file. Saving a user's edits in an NKSC file, rather than applying them directly to the user's NEF or NRW file, allows the user to retain their original image and to revert to the original image in Capture NX-D if needed. To revert to your original image in Capture NX-D, click the Restore button located on the app's right-hand side.