NEF files are RAW image files, and are different for each Nikon model. In order to open the NEF file in Photoshop, Photoshop will need to have the latest version of the Photoshop Camera Raw plugin. The newest version of this plugin is not available if you are running Photoshop CS5 or earlier, so converting the file is the only way to open it in Photoshop for editing.  You will be converting the file into DNG (Digital Negative Gallery) format, which allows it to be opened in any version of Photoshop. You may also need to convert the file if you have the latest version of Photoshop but the plugin doesn't yet support your new camera model. This is a free utility that is available for both Windows and OS X. You can download it for free from here. Once you've finished downloading it, run the setup program to install the converter on your computer. Once the installation has completed, run the Adobe DNG Converter program to open the conversion interface. Click the Select Folder... button in the first section to choose which images you want to convert. You can only select folders containing images, not single images. By default, they will be saved to the same location that the original images are stored. In the third section, you can set how you want the converted images to be named. By default, they will keep the original file name but add the .dng extension. Most users can leave these at their default settings, but if you're trying to convert an image so that it opens in an older version of Adobe Photoshop, click the Change Preferences... button and select the version you use from the "Compatibility" drop-down menu. If you want to embed the original NEF file in the DNG file, you can select this from the Preferences menu. This will result in a larger DNG file, but will allow you to extract the NEF file again later if you need it. Once your settings are correct, click the Convert button to begin converting the files. This may take a while, especially if you are converting a lot of files at once.
افهم الحاجة لتحويل الملف. نزّل برنامج أدوبي دي إن جي كونفيرتر. شغّل برنامج التحويل. حدد الملفات التي ترغب بتحويلها. حدد المكان المرغوب لحفظ الصور المحولة. اضبط إعدادات التسمية. اضبط تفضيلات التوافق. ابدأ عملية التحويل.