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• How To Open Dng Files
• Dng File Converter

1. Jul 23, 2010  Does everyone know which one tool can convert file Bin and Dmp of HASP HL to DNG if everyone know please share.
2. I have just purchased a Panasonic TZ80 camera. It can produce RW2 (aka: RAW) files. How can I convert these to DNG in Linux? I’d like to be able to do this on the command line without a graphical.

This article will describe three methods to convert your Raw files to DNG files. The first two methods will make use of Adobe Lightroom and the final method will use the free Adobe Digital Negative Converter. The Adobe DNG Converter is useful if you do not own Lightroom or you have a new camera and its Raw files are not supported by Lightroom. More on that later.

I wrote an article on what DNG files are and their pro and cons a while back. How to install sap license key. If you are not sure whether you should convert your Raw files to DNG, have a read of the article and come back here if you decide you want to give it a go.

It may seem odd, or even wrong, for me to start discussing how to convert Raw files to DNG after they have been imported. Surely it makes more sense to describe the import process before describing the process to adopt for Raw files that have already been imported into Lightroom. Maybe, but trust me!

There is no doubt that converting your Raw files to DNG files at the time of import is the most efficient method. But sometimes you forget or you may already have a pile of Raw files on your computer that you now want to convert to DNG. This method will show you how to convert all those existing Raw files into DNG files using Adobe Lightroom. Be warned, it will take a long time. So set it working and have a coffee, or ten.

Also, and this explains my back-to-front structure of this explanation, performing the conversion on a few existing Raw files allows you to get a good understanding of what options you have for the conversion.

Step 1

Make sure that you are in the Library module by pressing the G key. This will switch you to the Library module and arrange your images in the grid view.

Step 2

Select all the photos that you want to convert to DNG and choose Library > Convert photos to DNG

Step 3

This will open up a dialogue box with the following options:

• Only convert Raw files – with this option selected, Lightroom will only convert native camera Raw files to DNG. If you leave it unchecked, Lightroom will convert other file formats to DNG, including tiff, png and jpeg. These file types will not benefit from being converted to DNG so it’s just a waste of time.
• Delete originals after successful conversion – I know that this may sound a bit scary but there is no point in converting all those Raw files to DNG files if you are also going to keep the original Raw files. That would cause you to go through storage at an alarming rate. Plus, if you later decide to delete the Raw files, you will have an unenviable task ahead of you to locate them all, along with their sidecar XMP files. So, my advice is to check the box and let Lightroom do all the work for you.
• File extension – I can only imagine that this option is nothing more than cosmetic. The standard across all computer systems is lowercase extension names, so just select the lowercase extension. It is irrelevant which one you pick.
• Compatibility – Choose the latest version unless you have old legacy software on your computer that requires an earlier version. And, even if you do own such software, don’t use it!
• JPEG Preview – This determines the size of the embedded preview file. Remember, this is not permanent and will be changed by Lightroom as you work with the files. If you choose full sized, the conversion process will take longer. Read my article on this.
• Embed Fast Load Data – This allows the images to load faster in the Develop module but it does increase the file size slightly. Logically it makes sense to always select this option. We shoot Raw so we can have access to all that Raw loveliness when we develop our images. Plus, the DNG files will be almost half the size of the Raw files even with this option enabled. So, go on, enable it.
• Use Lossy Compression – This will significantly reduce the file size but it will result in a slight loss in quality. What to decide? This depends on your perceived future for the file. If you are going to edit the image, then leave this option unchecked (do not compress). However, if you do not foresee editing the image in the near future or you are archiving it after editing, go ahead and compress it. The image loss is minute and you need to print it very large and peer at it with a magnifying glass before you may see any difference. You decide.
• Embed Original Raw File – No! Just no. This would be a silly thing to do. Rather than reducing the load on your storage and CPU, you would be significantly adding to it. Embedding the original Raw file is not converting to the DNG format, it’s adding the DNG format. You’d be better to leave it Raw.

Step 4

Click on OK and make the coffee.

Here is a copy of my settings when converting to DNG. The only change I would make to these settings is when I have finished with the images and I am archiving them. In this case, I use lossy compression and file them.

Martin Evening is an accomplished studio photographer and author based in London. Martin’s book Photoshop for Photographers is in its 13th edition and his Adobe Photoshop Lightroom book has established itself as the encyclopedia on Lightroom. As an expert on Photoshop and Lightroom, Martin routinely encounters questions from photographers on topics like raw file formats. Below Martin tackles commonly asked questions and myths around Adobe’s openly documented DNG file format. I’d like to thank Martin for taking the time to explain this topic in such a clear format.

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Is it wise to convert your raw files to the Adobe DNG format? If you are using Lightroom or Photoshop with Camera Raw, you have the option to convert your master files to DNG. In this article I want to focus on the benefits of converting, the reasons why converting to DNG may not always be ideal or necessary, as well as tackle some of the misinformation about DNG.

The DNG format was devised by Adobe in response to the growing number of undocumented raw camera file formats that are produced each time a new digital camera is introduced. The problem here is that these camera file formats are all proprietary to the camera manufacturer that specified them. To open such files you either need the camera manufacturer’s own raw processing software, or the ability to interpret the raw data using third-­party software, such as Capture One, Camera Raw or Lightroom.

Any of the 500­‐plus types of raw files that are currently supported by Camera Raw and Lightroom can be archived using DNG. Some cameras even give you the option to save your capture images as DNG (including the latest Android smartphones). The DNG format is open standard, which means the file format specification (based on the TIFF 6 file format) is made freely available to any third-party developer. A number of programs other than Lightroom and Photoshop are able to read from and write DNG files. This supports the case for DNG as an archive format that meets the criteria for long-term file preservation that will enable future generations to access and read the DNG raw data. This should hold true in the same way regular TIFF files look set to be readable for the foreseeable future.

You will notice that whenever you import files into Lightroom, you have the option to convert to DNG. You can also do this by making a selection of photos in the Library module and choosing Library > Convert Photos to DNG. The only proviso is that the photos you import or select are in a raw format Lightroom recognizes. For now, there is no imminent need to convert everything to DNG since undocumented raw formats can still widely be read. However, in the long term, there are legitimate concerns about the suitability of storing raw files using undocumented file formats. Major operating system updates have been known to make older operating systems, and the software that runs on them, obsolete within a matter of a few years.

Therefore, continued support for undocumented file formats is directly dependent on future support for those applications. It is likely Adobe will be around 10 years from now, but photographers should really be asking themselves “what will happen in 50 or 100 years’ time?”

The DNG format contains a checksum validation feature, which can be used to spot corrupted DNG files. This is a useful feature for archivists as it allows them to check on the condition of their archived files.

The DNG format allows you to enable Fast Load Data, which stores a standard-size preview in the DNG file. This enables faster loading when opening an image in Camera Raw or Lightroom. Having said that, Lightroom 6.3 now includes faster Camera Raw caching whereby the opening of proprietary raw files is now almost as fast as opening a DNG with Fast Load Data enabled. The DNG spec also enables image tiling, which can speed up file data read times when using multicore processors compared with reading a continuous compressed raw file, that can only be read using one processor core at a time.

Raw files that have been converted to DNG tend to be smaller in size compared to the original raws. This is because the lossless compression method Adobe uses is generally more efficient compared to that implemented by most proprietary raw formats. In some instances the file size savings can be really dramatic.

If you are using Camera Raw 9 or Lightroom 6, you can create Photo Merged panoramas or HDR images that are saved as DNGs. Because of this they can retain the raw characteristics of the source images.

It is also worth pointing out that Camera Raw/Lightroom Photo Merge HDR are saved as compact, scene-referred 16-bit floating point TIFFs that can contain over 30 stops of image data. This is compared to HDR files that contain “baked” output-referred data that have to be saved as 32-bit TIFFs in order to store more than 30 stops of image data. Therefore Camera Raw/Lightroom HDR DNGs offer a more efficient workflow for HDR photography compared to other HDR-­‐processing methods.

Camera Raw gets updated several times each year to provide support for the latest cameras and lenses. These updates are now only available to customers who are using Photoshop CC (since Camera Raw 9.2/Lightroom 6.2, ongoing Camera Raw support has ceased for CS6 customers). However, CS6 users, as well as those running older versions of Photoshop (or earlier versions of Lightroom) can use the DNG Converter program to batch convert raw files shot with the latest cameras to DNG and thereby keep their old software up-to-date.

DNG Cons

Converting to DNG does have its downsides, most notably, the added time it takes to convert raw files to DNG.

While Adobe programs work well with the DNG format, there are other programs that support DNG, which do not. This has led to problems for some photographers who have converted to DNG. These are fixable through proper implementation of the DNG spec, but nonetheless it can be a hindrance to some users who are working with other raw processing programs. If you convert to DNG you do certainly lose the ability to process DNG files using the manufacturer’s dedicated raw processing software, unless you choose to embed the original raw inside the DNG. However, this can double the file size because you will be storing two raw files in one container.

If you save edit changes to the DNG files, this will slow down the backup process because the backup software will have to copy a complete DNG file instead of just the XMP sidecar files that otherwise accompany proprietary raw images. Personally, I believe it is better to let the Lightroom catalog file store the metadata edits rather than constantly overwrite the files referenced by the catalog. If you are in the habit of saving metadata edits to the files themselves as well, this is an important consideration, but you need to ask yourself, “In an emergency situation, where I might need to restore all my metadata edits, which is going to be the most up-to-date? The metadata that’s stored in the files, or the metadata that’s stored in the Lightroom catalog?”

DNG Myths

Whenever you open a raw image in Camera Raw/Lightroom the raw data is internally converted to the DNG format regardless of whether the file being read is a DNG file or not. In other words, DNG is the internal format for Camera Raw/Lightroom. If you can open an image normally using Camera Raw or Lightroom there will be no difference if you convert to DNG. It is true to say though that the raw data is converted in as much as the lossless compression used is different. The DNG format is based on the TIFF 6 spec, which is an industry standard file format.

The ability to read the raw data on a DNG is therefore only limited by the implementation of the DNG spec. When a DNG file is read correctly, the result will be identical to reading the proprietary raw format version the DNG was converted from.

How To Open Dng Files

When you import a raw file, Lightroom applies a camera profile setting as part of the import process. The same is true when you copy files to Bridge and open them in Camera Raw. The camera profile merely establishes the base settings ‘look’ for the imported files. By default, the camera profile is set to Adobe Standard. This applies a camera profile (created in-­‐house by Adobe) that is specific to the camera the photo was shot with. If you prefer the default profile to be different, such as Camera Standard (to match the camera JPEG previews) you can do so by setting this as the new default.

When you convert a proprietary raw file to the DNG format it preserves the colors of the original raw file in the native color space of the sensor. Converting to DNG does not actually convert the data to an Adobe Camera Profile. “Adobe Standard” is simply an option for the default color rendition when interpreting that raw color data in Lightroom of Camera Raw. The camera profile information is included in the DNG metadata so it can be read by Adobe Camera Raw or Lightroom. The Adobe Standard camera profile is meaningless to other DNG-compatible software programs and is therefore simply ignored by them.

Other DNG-compatible programs, such as Capture One are able to read DNG files, just as they are able to read any other recognized raw format. How the raw data may have been previously read and edited using Camera Raw or Lightroom will have no bearing on another program’s ability to read the same raw data. This is because each raw processing program will have its own unique way of demosaicing the raw data and will allow you to apply image adjustments using that program.

The DNG format was originally designed with raw files in mind, but you can also use it to archive JPEGs, and here’s why. While it is true that converting a JPEG to DNG does not turn it into a raw file, there are very good reasons for using DNG as a JPEG container format. Lightroom allows you to import and edit JPEG files (such as those shot using a smart phone) using the same slider controls as you use to process raw files. If you save the metadata to a JPEG file via Camera Raw or Lightroom, the Camera Raw settings are saved to the file’s metadata so these settings can be read externally if you edit the original or a copy of the original file. If you choose to export a JPEG from Lightroom, it is all too easy for the Camera Raw metadata to be omitted. If you choose to convert your JPEG files to DNG, the Lightroom-applied settings will always travel with the master image and allow another Camera Raw/Lightroom user access to the settings applied to the JPEG. At the same time, saving as a DNG file saves a Lightroom-adjusted preview, so when it’s viewed in any third-party, DNG-aware program, the correct preview is seen, even if it doesn’t have the same edit controls as Lightroom or Camera Raw.

All photographs © Martin Evening. My thanks to Eric Chan and Tom Hogarty at Adobe for their assistance, researching this article.

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