lensfun 0.7.0

Pure-Rust port of LensFun: camera lens correction (distortion, TCA, vignetting) without C dependencies
Documentation 
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<!ELEMENT lensdatabase (mount*, camera*, lens*) >
<!ATTLIST lensdatabase version NMTOKEN #REQUIRED >

<!ELEMENT mount (#PCDATA | name | compat)* >

<!ELEMENT name (#PCDATA) >
<!ATTLIST name lang CDATA #IMPLIED >

<!ELEMENT compat (#PCDATA) >

<!ELEMENT camera (maker+, model+, variant?, mount, cropfactor, aspect-ratio?) >

<!ELEMENT maker (#PCDATA) >
<!ATTLIST maker lang CDATA #IMPLIED >

<!ELEMENT model (#PCDATA) >
<!ATTLIST model lang CDATA #IMPLIED >

<!ELEMENT variant (#PCDATA) >

<!ELEMENT cropfactor (#PCDATA) >

<!ELEMENT aspect-ratio (#PCDATA) >

<!ELEMENT lens (maker+, model+, mount+, focal?, aperture?, type?, cropfactor, aspect-ratio?, calibration?) >

<!ELEMENT focal EMPTY >
<!ATTLIST focal min NMTOKEN #IMPLIED >
<!ATTLIST focal max NMTOKEN #IMPLIED >
<!-- or -->
<!ATTLIST focal value NMTOKEN #IMPLIED >

<!ELEMENT aperture EMPTY >
<!ATTLIST aperture min NMTOKEN #IMPLIED >
<!ATTLIST aperture max NMTOKEN #IMPLIED >
<!-- or -->
<!ATTLIST aperture value NMTOKEN #IMPLIED >

<!ELEMENT type (#PCDATA) >

<!ELEMENT calibration (distortion*, tca*, vignetting*)+ >

<!ELEMENT distortion EMPTY >
<!ATTLIST distortion model (poly3 | poly5 | ptlens) #REQUIRED >
<!ATTLIST distortion focal NMTOKEN #REQUIRED >
<!ATTLIST distortion real-focal NMTOKEN #IMPLIED >
<!-- when model = poly3 | poly5 -->
<!ATTLIST distortion k1 NMTOKEN #IMPLIED >
<!-- when model = poly5 -->
<!ATTLIST distortion k2 NMTOKEN #IMPLIED >
<!-- else, when model = ptlens -->
<!ATTLIST distortion a NMTOKEN #IMPLIED >
<!ATTLIST distortion b NMTOKEN #IMPLIED >
<!ATTLIST distortion c NMTOKEN #IMPLIED >

<!ELEMENT tca EMPTY >
<!ATTLIST tca model (linear | poly3) #REQUIRED >
<!ATTLIST tca focal NMTOKEN #REQUIRED >
<!-- when model = linear -->
<!ATTLIST tca kr NMTOKEN #IMPLIED >
<!ATTLIST tca kb NMTOKEN #IMPLIED >
<!-- else, when model = poly3 -->
<!ATTLIST tca vr NMTOKEN #IMPLIED >
<!ATTLIST tca vb NMTOKEN #IMPLIED >
<!ATTLIST tca cr NMTOKEN #IMPLIED >
<!ATTLIST tca cb NMTOKEN #IMPLIED >
<!ATTLIST tca br NMTOKEN #IMPLIED >
<!ATTLIST tca bb NMTOKEN #IMPLIED >

<!ELEMENT vignetting EMPTY >
<!ATTLIST vignetting model (pa) #REQUIRED >
<!ATTLIST vignetting focal NMTOKEN #REQUIRED >
<!ATTLIST vignetting aperture NMTOKEN #REQUIRED >
<!ATTLIST vignetting distance NMTOKEN #REQUIRED >
<!-- when model = pa -->
<!ATTLIST vignetting k1 NMTOKEN #REQUIRED >
<!ATTLIST vignetting k2 NMTOKEN #REQUIRED >
<!ATTLIST vignetting k3 NMTOKEN #REQUIRED >