![]() ![]() ![]() CR3 Metadata changes are only supported through XMP sidecar, as no write support is possible with this format.Īlthough the new libraw based interface is less powerful than Exiv2 (which permits a lot of operations on tags), by using libraw. So we needed to use an alternative, and by chance, libraw provides mechanisms to handle property tags from a client application.įor digiKam 7.1.0, we have written a metadata interface based on libraw for the CR3, and the application is now able to read a large portion of Exif tags, including GPS information, color profile, and, of course. In digiKam, historically we have used the Exiv2 library to deal with file metadata, but this library is not yet able to extract information from CR3 images. The CR3 file format is a complex proprietary container based on ISO/IEC base media file format. The goal is to be able to use some technical criteria in search of an engine later to find items in huge collections. ![]() This information is used to populate the database with the main shot information captured from the camera. With the 7.0.0 release, the Canon CR3 Raw file metadata support was basic, with only a few properties taken from Exif. This library includes complex algorithms to support all kinds of different RAW file formats, including the Canon CR3. This is why we use the powerful Libraw library to post-process the RAW files on the computer. This is also the case for the Canon CR3: the RAW format produced by this camera has required intensive reverse-engineering that the digiKam team cannot always support well. This is true for JPEG, but not RAW files, where the format changes for every new camera released, as it depends on the camera’s sensor data. When you buy an expensive camera, such as the latest Canon devices, you should expect the image provided to be seriously pre-processed by the camera firmware and ready to use immediately. RAW files allow camera makers to reinvent the wheel and implement hidden features, to cache metadata, or encrypt information. Nothing is standardized and camera makers are free to change everything inside these digital containers without ever documenting it. Some applications have been especially created only to support RAW files from specific cameras, as this kind of support is complex, long, and hard to maintain over time. Better Canon CR3 Metadata SupportĭigiKam tries to support as many digital cameras' file formats as possible, but support for RAW files is a big challenge. Check out some of the highlights listed below and discover all the changes in detail. It introduces plenty of fixes and some features. This maintenance version is a result of a long period of bug-triaging on bugzilla. After this long summer, we are now proud to release digiKam 7.1.0. ![]()
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