This is mainly required for pure mechanical lenses, but may also be needed for off-brand / third party lenses. You can override this manually and select your lens from a hierarchical menu. lens The lens make and model as determined by the image’s Exif data. Only lenses with correction profiles matching the selected camera will be shown. You can override this manually and select your camera from a hierarchical menu. Don’t forget to share your profile with the lensfun team! □module controls camera The camera make and model as determined by the image’s Exif data. Alternatively you may visit the lensfun project to learn how to generate your own set of correction parameters. If there is still no matching profile for your lens, a lens calibration service is offered by Torsten Bronger, one of darktable’s users. If you can’t find your lens, check if it is in the list of currently supported lenses, and try running the lensfun-update-data tool. ![]() Note that you may need to re-import the images once such adjustments have been made as the lens name is retrieved as part of the import process. If your lens is present in the list but has not been correctly identified, this may require some adjustment within the exiv2 program (see this post for details). You may try to find the right profile yourself by searching for it in the menu. If your system’s lensfun library has no correction profile for the automatically identified camera/lens combination, the controls for the three photometric parameters (below) are replaced with a warning message. This module identifies the camera/lens combination from the image’s Exif data and uses the external lensfun library to provide correction parameters. ![]() Automatically correct for (and simulate) lens distortion, transversal chromatic aberrations (TCA) and vignetting.
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