Rawtherapee camera preset4/4/2024 ![]() If it does not, then your RawTherapee installation is buggy - try reinstalling, and if the problem persists then seek help via the forum. ![]() If you click on either drop-down, it should contain a long list of entries. To find out whether RawTherapee can query the Lensfun database at all, look at the "Camera" and "Lens" drop-downs in the Profiled Lens Correction tool. How to check whether your Lensfun database is intact If your camera and lens cannot be decoded from the photo's metadata, you may still be able to specify them manually, depending on the tool. This will hopefully change in RawTherapee 6.0 which will use Exiv2. ![]() For the time being, there is nothing you can do about this but wait for a new version of RawTherapee. If it does not, then RawTherapee failed to decode this information correctly. The info panel should show your camera and lens names. To check whether the camera and lens names are decoded correctly, open a photo and in the Editor tab hit the " Quick info" button. This information is decoded from the photo's metadata (currently using a home-made solution, and in the future using Exiv2). In order for RawTherapee to be able to automatically query the Lensfun database, RawTherapee needs to know which camera and lens was used to take a given photo. The tools "Profiled Lens Correction" and "Perspective" rely on data from Lensfun to simplify and automate the work of specifying the right camera/lens information and finding the optimal correction parameters. You can find more information about it in the Lensfun FAQ. Lensfun is an open-source project which contains a database of lens parameters. There are two sources for this data: Lensfun and Adobe LCP. Some of these sub-tools are capable of performing their function in an automated way with a single click by relying on data which describes the imperfections inherent to a given camera and lens. Do as the camera does: correct the distortion, and the dark corners disappear It is not possible to fix the dark corner issue by using vignetting correction - there is no information about the scene in those corners, the scene is occluded by the lens mechanism/lens hood. When you view a JPEG image from these cameras the distortion has already been corrected in-camera, so owners are often unaware that the problem existed in the first place and are surprised to find that the raw image shows these dark corners. The way these cameras deal with these two problems is by correcting the distortion, as a result of which the corners of the image get "pushed out" beyond the frame, thereby hiding the corners darkened by the lens or lens hood. Typically the same cameras have lenses which suffer from strong distortion. Some cameras, typically small ones - compacts, bridge-type and even mirrorless - will capture parts of the lens hood or lens mechanism in the corners of the frame. They allow you to fix errors and distortions which derive from imperfections in your camera gear, such as lens distortion and vignetting, as well as to improve issues deriving from the placement and adjustment of your camera, such as an uneven horizon or perspective distortion.ĭo not confuse vignetting with a blurry lens hood being visible in the corners of your image. This tool comprises of several sub-tools which share common adjustment parameters.
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