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Support Canon Highlight Tone Priority compensation #21408

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Support Canon Highlight Tone Priority compensation #21408

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7 changes: 7 additions & 0 deletions src/common/exif.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -1172,6 +1172,13 @@ static void _check_highlight_preservation(Exiv2::ExifData &exifData,
else if(state == 2)
img->exif_highlight_preservation = 0.66f; // estimated strength for Strong
}
// Canon Highlight Tone Priority. D+ (1) and D+2 (2) both apply ~1 EV sensor underexposure.
if(FIND_EXIF_TAG("Exif.CanonLiOp.HighlightTonePriority"))
{
const long state = pos->toLong(0);
if(state > 0)
img->exif_highlight_preservation += 1.0f;
}
else if(FIND_EXIF_TAG("Exif.Fujifilm.DevelopmentDynamicRange") // manual mode DR100/DR200/DR400
|| FIND_EXIF_TAG("Exif.Fujifilm.AutoDynamicRange")) // auto mode
{
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