Read lens model and pass it to EXIF data

[thekid]

Example

img.util.ExifData(6000 x 4000 image/jpeg)@{
  [file            ] input stream (-1 bytes)
  [make            ] Canon
  [model           ] Canon EOS 250D
  [lensModel       ] EF8-15mm f/4L FISHEYE USM
  [software        ] Adobe Photoshop Elements 18.0 (Windows)
  [flash           ] 0 (off)
  [orientation     ] 1 (horizontal, normal)
  [dateTime        ] 2024-11-23 10:14:53+0400
  [apertureFNumber ] f/14.0
  [exposureTime    ] 1/100
  [exposureProgram ] 3 (aperture priority)
  [meteringMode    ] 5 (pattern)
  [whitebalance    ] 0
  [isoSpeedRatings ] 100
  [focalLength     ] 10
}

See https://stackoverflow.com/questions/39929814/exif-data-lensmodel-property

[thekid]

iPhone 16 stores this only in the XMP segment, while the older iPhone XS includes it in both places.

use img\io\{MetaDataReader, XMPSegment};
use io\streams\FileInputStream;

$reader= new MetaDataReader();
if ($xmp= $reader->read(new FileInputStream($argv[1]))->segmentsOf(XMPSegment::class)) {
  $rdf= 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';

  // iPhone 16 back dual wide camera 5.96mm f/1.6
  $lens= $xmp[0]->document()
    ->getElementsByTagNameNS($rdf, 'Description')[0]
    ->attributes['LensModel']
    ->value
  ;
}