What is MIME type "image/x-nikon-nef"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

The MIME type image/x-nikon-nef identifies raw image files produced by Nikon cameras.
These files capture sensor data without in-camera processing.
They preserve details and offer a wide dynamic range for post-processing.
Files using this MIME type normally have the NEF extension.

This format stores both the image and critical metadata, such as exposure settings and white balance.
It gives photographers more control during editing by retaining original details.
It is a key component in workflows that demand high image quality.

• Maximum Detail: Retains unprocessed sensor data for superior editing.
• Editing Flexibility: Offers extensive latitude in adjusting color, exposure, and more.
• Metadata Rich: Embeds settings that help in reproducing the photographer’s intent.

Other raw formats exist, like those with the CR2 or ARW extensions, but image/x-nikon-nef is dedicated to Nikon devices.
For additional insights on MIME types, see this reference.

Associated file extensions

.cr2, .nef, .arw, .cap, .dcr, .srf, .raf, .kdc, .orf, .mrw, .pef, .crw, .iiq, .x3f, .capture

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:

    Content-Type: image/x-nikon-nef
  

HTML

In HTML, you can specify the MIME type in various elements:

    <a href="file.dat" type="image/x-nikon-nef">Download file</a>
  

Server-side (Node.js)

Setting the Content-Type header in Node.js:

    const http = require('http');
    
    http.createServer((req, res) => {
      res.setHeader('Content-Type', 'image/x-nikon-nef');
      res.end('Content here');
    }).listen(3000);
  

Associated file extensions

.cr2, .nef, .arw, .cap, .dcr, .srf, .raf, .kdc, .orf, .mrw, .pef, .crw, .iiq, .x3f, .capture