If Windows 10 doesn’t support the RAW image format of your camera, then it will only show the default image icons instead of thumbnails of your images. Tip: If you want to view RAW files on Windows 7 or Windows 8, please download Microsoft camera codec pack manually. Nevertheless, since Microsoft has stopped updating the codec pack, there are still plenty of RAW formats that Windows 10 doesn’t support, like NEF and ORF. With thumbnail preview, it would be super convenient to find or edit RAW image files with professional editing tools. As a matter of fact, Windows 10 is built-in with Microsoft camera codec pack, which automatically recognizes those device-specific file formats and allows users to preview RAW files in Windows Explorer without third-party apps. You may have found that Windows 10 allows users to preview thumbnails of some RAW images, like ARW, DNG and CR2, and open these RAW pictures with Photos app.

Open RAW Photos with RAW Image Viewer on Windows 10 View RAW Images on Windows 10 with Codec for Specific Camera

View RAW Files with Microsoft Camera Codec Pack on Windows 10

Image raw viewer