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$ pkg info lensfun=20=20=20
lensfun-0.3.95_2
Name           : lensfun
Version        : 0.3.95_2
Installed on   : Thu Jan 18 21:51:20 2024 EST
Origin         : graphics/lensfun
Architecture   : FreeBSD:14:amd64
Prefix         : /usr/local
Categories     : graphics
Licenses       : PD and LGPL3 and GPLv3 and CC-BY-SA-3.0
Maintainer     : danfe@FreeBSD.org
WWW            : https://lensfun.github.io/
Comment        : Library for fixing lens geometry distortions
Options        :
        PYHELPERS      : on
        SIMD           : on
Shared Libs required:
        libpng16.so.16
        libintl.so.8
        libglib-2.0.so.0
Shared Libs provided:
        liblensfun.so.2
Annotations    :
        FreeBSD_version: 1400097
        build_timestamp: 2024-01-07T11:50:49+0000
        built_by       : poudriere-git-3.4.0
        port_checkout_unclean: no
        port_git_hash  : 756e18783
        ports_top_checkout_unclean: no
        ports_top_git_hash: 756e18783
        repo_type      : binary
        repository     : FreeBSD
Flat size      : 3.08MiB
Description    :
The goal of the lensfun library is to provide an open source database of
photographic lenses and their characteristics.  In the past there was an
effort in this direction (see http://www.epaperpress.com/ptlens/), but then
author decided to take the commercial route and the database froze at the
last public stage.  This database was used as the basement on which lensfun
database grew, thanks to PTLens author which gave his permission for this,
while the code was totally rewritten from scratch (and the database was
converted to a totally new, XML-based format).

The lensfun library not only provides a way to read the lens database and
search for specific things in it, but also offers a set of algorithms for
correcting images based on detailed knowledge of lens properties and
calibration data.  Right now lensfun is designed to correct distortion,
transversal (also known as lateral) chromatic aberrations, vignetting, and
colour contribution of the lens (e.g. when sometimes people says one lens
gives "yellowish" images and another, say, "bluish").

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