![]() ![]() Thus, instead of using LCP profiles, please consider uploading RAW images suitable for calibration. In Lensfun's official database, no profiles using “acm” models are accepted. And last but not least, automatic lens detection is much more reliable with genuine Lensfun datasets. ![]() Moreover, since recent Adobe products do not correct TCA based on LCP files anymore, TCA coverage is bad for newer lenses. In particular, vignetting is corrected only partially. Note however, that Adobe files tend to undercorrect distortion and vignetting. See the manpage of “lensfun‑convert‑lcp” and its output with the “‑h” option for further information. ![]() “lensfun‑convert‑lcp” merges the two data sources, so you get the best of both worlds. After that, the data is immediately available in your favourite Lensfun-using RAW converter. Once you have put the LCP files in a directory on your computer, you can easily import them into Lensfun by calling “lensfun‑convert‑lcp” in this directory. Additionally, you may google for further sources of LCP profiles. The RawTherapee community has created a page describing in detail how to get LCP profiles. Moreover, a comprehensive library of LCP profiles is shipped with Adobe's DNG converter, but pay attention to the licence agreement associated with this software. Everyone can create LCP profiles using Adobe's Lens Profile Creator. The LCP file format is defined by Adobe (see the specification) and used in their Lightroom and Photoshop products. Usually, one LCP file contains data of exactly one lens. LCP files contain lens correction information – just like Lensfun's database does. Therefore, it may be helpful for you that Lensfun is able to use so-called LCP files. Most datasets lack vignetting data, and many lack TCA data. Moreover, only for distortion correction, the coverage is at almost 100%. While Lensfun's lens database is pretty comprehensive, it does not contain all lenses. ![]()
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