Product NDNGgation

DNG File Format Specification

File format .DNG
Type Raw image format
Developed By Adobe Systems

What do you understand by DNG file format?

DNG File format stands for (Digital Negative). This file format was created by Adobe as a potential solution to the problem introduce by all of the competing proprietary camera raw formats. It file contain all the uncompressed raw data that proprietary raw file contain, and when you save a camera raw file as a DNG, it does not lose any of the information that was stored in the original file. DNG files are often used as archival files, but you can also use them for working files. DNG format is a wrapper that can contain all kind of useful information about your image file. It file can store only the “negative” but also a “print”. You can create an embedded preview that reflects all the adjustment you have made. Digital file can be universally accessible, while at the same time offering manufactures protection for the proprietary image process algorithm. DNG format allows R&D preserving by reducing the need to develop new formats and by simplifying camera testing. User can easily convert DNG file to other several type of file format such as NEF, CR2, ARW etc. This format helps promote archival confidence. It allows greater control over the quality of conversions by third-party applications.

Advantages of DNG file

List of application that open DNG file

  • Corel Photo-paint
  • Picasa
  • Adobe Photoshop
  • FastStone Image Viewer
  • ACDSee
  • Eltima corel paint-shop pro.

How to open DNG file in windows OS?

  • STEP1: Select the DNG file, Right click the DNG.
  • STEP2: Now, choose Open with option & select default program .
  • STEP3: If default program option not available, then choose Adobe Photoshop, Corel Photo-paint in the list of the program.
  • STEP4: Click Ok.

Note: If DNG supported software is not available on your PC, so you need to download from the internet and install it.

Advantages of DNG File

  • DNG uses lossless compression, thereby reducing file size 10 to 40 percent compared to RAW files.
  • With DNG files, metadata can be written directly into the file structure, eliminating the need for XMP sidecar files as with RAW files.
  • The User can save photos in the RAW file format, converting these to DNGs in Lightroom and archiving the DNG photos files instead avoid s obsolescence or compatibility problems in the future and offers additional advantages.
  • DNG format contains a file hash verification tool that can tell if the raw image data remains unchanged and uncorrupted.

Disadvantages of DNG File

  • DNG addresses the lack of an open standard for the RAW files created by individual camera models.
  • It files cannot be handled in every possible raw file processor out there, especially the camera manufacture’s Software.
  • In DNG format, the underlying raw data does not change, so it can continue to be verified forever.

Reasons of DNG file corruption

  • DNG file was damaged due to the program crashing or hanging.
  • Due to system failure, DNG file may be crashed.
  • Due to suddenly power surge while opening, transferring or editing your DNG files lead to corruption.


In this article describe the concept DNG file format. This format developed by Adobe systems. It removes a potential barrier to new camera adoption. It is an archival format for the raw files generated by digital cameras. DNG format is supported by various software versions Also describe its advantages and disadvantages of DNG file.