dcpTool

dcpTool is an application that was designed to help advanced PC users dismantle DNG camera profiles in the form of DCP files in order to edit them conveniently on their computers.

During operation, digital cameras supply a bunch of data of the ColorChecker image and DNG profiles are used to describe the colorimetric interpretation of this digital raw image data.

These profiles can come quite in handy during post-processing, as it can make the whole operation much more accurate and faster by covering a wide range of consistent and precise data.

The principle behind dcpTool is that it can turn DCP files on your computer into an editable XML form of themselves, and also use editable XMLs to compile the data back together into a DCP file, therefore making the process easily reversible. Embedded DCP profiles can be extracted from DNG files and profiles can be turned into "Invariate" versions.

Invariate profiles will make sure that no changes occur to the tint of an image whenever you adjust various exposure settings. More so, this application is also capable of "untwisting" DCP files, meaning that profiles that feature embedded hue twists will no longer have them when the untwisting operation is complete.

The application is portable, meaning that you don't need to install it on your computer and can run it from removable storage media such as USB flash drives or external HDDs as well, without worrying that it will tamper with your Windows registries or create files or folders on your PC without your consent.

Its interface is command-line-based, which makes it a little bit inconvenient for newer users that might not be familiar with it. However, since its profile is rather technical, this shouldn't be a concern for professionals.

If you're looking to modify your digital camera's DNG profile, you can find an ally in dcpTool. It comes with a CLI (command line interface), doesn't require installation and can perform some auxiliary tasks as well.