---
title: FAQ - frequently asked questions
linktitle: FAQ
layout: default
weight: 6
---

* __How do I know if a certain lens and camera combination will be supported by Lensfun?__

    Please check the <a href="/lenslist/">list of supported lenses</a> for the latest release. Before 
    you report a missing lens, camera, or even start calibration by your own, please also check the 
    list of lenses of the current development version at 
    <a href="http://wilson.bronger.org/lensfun_coverage.html">
    http://wilson.bronger.org/lensfun_coverage.html</a>

* __My camera and lens is in the list of supported lenses but my image editor does not recognize them?__

    Probably the Lensfun database on your computer is out of date. On Linux, Lensfun is usually 
    installed system wide by a package manager. On Windows and Mac, Lensfun is usually shipped 
    together with the image editing application. Please check for updates!

* __My lens should be supported but the camera is missing. What can I do?__

    The camera entry in the database only holds crop factor and lens mount. As a workaround you 
    can simply select any other camera with the same lens mount and sensor size or crop factor. 

* __The lens is wrongly identified by the image editor as a different lens than I have actually used. Why?__

    Most open source programs today use the <a href="http://www.exiv2.org/">exiv2 library</a> to 
    retrieve the camera and lens information. You can use the command line tool `exiv2` to see if 
    the retrieved information is correct:

           $> exiv2 -pt 2938031.jpeg |grep -i 'lens\|model\|make'

    If the lens name is not correct in the above output please report a bug at the 
    <a href="http://dev.exiv2.org/projects/exiv2/issues">exiv2 issue tracker</a>
    
