Quote from: Jom on August 01, 2022, 05:54:54 AMFirstly you must get all metadata from those photos:
exiftool -a -s -sort -G FILENAME
or
exiftool -a -s -sort -G -ext EXTENSION .See the values of the options here
https://exiftool.org/exiftool_pod.html
Then you must look extracted tag list if there is a tag with the device name.
[EXIF] Model : Canon EOS 600D
or
[MakerNotes] CanonImageType : Canon EOS 600D
or
[MakerNotes] CanonModelID : EOS Rebel T3i / 600D / Kiss X5
Then you can view only the camera model for all photos using the name of the desired tag.
exiftool -Model -ext EXTENSION .
Thanks.
One question.
For one photo I got vis SMS:
E[ExifTool] ExifToolVersion : 12.44
[File] BitsPerSample : 8
[File] ColorComponents : 3
[File] CurrentIPTCDigest : d41d8cd98f00b204e9800998ecf8427e
[File] Directory : .
[File] EncodingProcess : Baseline DCT, Huffman coding
[File] ExifByteOrder : Big-endian (Motorola, MM)
[File] FileAccessDate : 2022:08:01 09:38:56+02:00
[File] FileCreateDate : 2022:08:01 10:10:44+02:00
[File] FileModifyDate : 2022:08:01 10:10:45+02:00
[File] FileName : 1.jpg
[File] FilePermissions : -rw-rw-rw-
[File] FileSize : 66 kB
[File] FileType : JPEG
[File] FileTypeExtension : jpg
[File] ImageHeight : 640
[File] ImageWidth : 480
[File] MIMEType : image/jpeg
[File] YCbCrSubSampling : YCbCr4:2:0 (2 2)
[File] ZoneIdentifier : Exists
[JFIF] JFIFVersion : 1.01
[JFIF] ResolutionUnit : None
[JFIF] XResolution : 72
[JFIF] YResolution : 72
[EXIF] ColorSpace : sRGB
[EXIF] ExifImageHeight : 640
[EXIF] ExifImageWidth : 480
[Photoshop] IPTCDigest : d41d8cd98f00b204e9800998ecf8427e
[Composite] ImageSize : 480x640
[Composite] Megapixels : 0.307
and for another photo I got also via SMS
[ExifTool] ExifToolVersion : 12.44
[File] BitsPerSample : 8
[File] ColorComponents : 3
[File] Directory : .
[File] EncodingProcess : Baseline DCT, Huffman coding
[File] FileAccessDate : 2022:08:01 10:23:40+02:00
[File] FileCreateDate : 2022:08:01 10:10:48+02:00
[File] FileModifyDate : 2022:08:01 10:10:48+02:00
[File] FileName : 2.jpg
[File] FilePermissions : -rw-rw-rw-
[File] FileSize : 39 kB
[File] FileType : JPEG
[File] FileTypeExtension : jpg
[File] ImageHeight : 768
[File] ImageWidth : 576
[File] MIMEType : image/jpeg
[File] YCbCrSubSampling : YCbCr4:2:0 (2 2)
[File] ZoneIdentifier : Exists
[JFIF] JFIFVersion : 1.01
[JFIF] ResolutionUnit : None
[JFIF] XResolution : 1
[JFIF] YResolution : 1
[Composite] ImageSize : 576x768
[Composite] Megapixels : 0.442
Does this mean that photos are made with different phones? Different resolution, one photo made out of home (claiming that it is taken by Iphone 7) and sent vis SMS but it is different resoulution and showing ExifByteOrder, but another one made later from home with Iphone 7 showing resolution 576x768 and no ExifByteOrder info...
To me looks like photos are from different devices, one from Iphone 7 and sent by SMS, but the other one from some other phone and sent via SMS with Iphone 7. Right?
I can't say anything for sure, but it looks like these photos had a different path in life, because metadata not only differ in values, but in composition.
I am particularly confused by these tags.
[File] CurrentIPTCDigest : d41d8cd98f00b204e9800998ecf8427e
[Photoshop] IPTCDigest : d41d8cd98f00b204e9800998ecf8427e
Where did they come from, did a smartphone record them?
But I'm not an expert in such matters, this is my amateur opinion.
Quote from: Jom on August 01, 2022, 07:42:43 AMI can't say anything for sure, but it looks like these photos had a different path in life, because metadata not only differ in values, but in composition.
I am particularly confused by these tags.
[File] CurrentIPTCDigest : d41d8cd98f00b204e9800998ecf8427e
[Photoshop] IPTCDigest : d41d8cd98f00b204e9800998ecf8427e
Where did they come from, did a smartphone record them?
But I'm not an expert in such matters, this is my amateur opinion.
Yes, both are from smartphone. Just I think different devices
If possible, try to get these photos in their original form, for example by email. Perhaps then more metadata will be saved and there will be a device model.
Perhaps one of the photos was edited on the same device, then the metadata may also be different.
Quote from: Jom on August 01, 2022, 07:42:43 AMI am particularly confused by these tags.
[File] CurrentIPTCDigest : d41d8cd98f00b204e9800998ecf8427e
[Photoshop] IPTCDigest : d41d8cd98f00b204e9800998ecf8427e
The
IPTCDigest is a checksum of the IPTC IIM/Legacy data and is used to compare such data to the matching XMP data. If there is a discrepancy, it shows that the data is no longer in sync. Programs that use the
IPTCDigest are supposed to ignore the XMP data in favor of the IPTC IIM data.
CurrentIPTCDigest is generated on the fly by exiftool and is the checksum of the current IPTC IIM data in the file. You could compare the two and if different, then the
IPTCDigest was not updated the last time the IPTC IIM data was altered.
IMO,
IPTCDigest is a legacy tag from when XMP data was new and IPTC IIM was still the main standard. As more and more programs have begun to support XMP as the primary source and may not update IPTC IIM data at all, this tag can become a problem.
More details can be found under the notes for these tags on the Photoshop Tags (https://exiftool.org/TagNames/Photoshop.html) and Extra Tags (https://exiftool.org/TagNames/Extra.html) pages.