DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - Facebook Photo of White Man with Black Child's Body Shocks South Africa

**HBPujWBe** · 08-30-2011, 08:44 AM

I wrote this in my first post, as an edit, but I'll write it here too in case people miss it:

Obviously the black rectangle over the child's face is part of the editing, but that could easily be done in Paint. After doing some comparisons, the most striking thing about this photo is the number of different camera signatures. I also noticed that the "GIMP" signature is present in all photos, edited or unedited, so that's probably a false alarm.

From here:

The "subsamp match" column indicates that the type of chroma subsampling used in the image matches the type associated with the signature entry in the database.

In general, the subsampling should match for the signature to be a reliable match.

The list of cameras and software under the signature search are all ones that have the same signature as the one identified in the image. It means that those other cameras and software tools could have also produced images with the same signature, not that someone used multiple cameras or software programs to produce the image.

However, with regards to your question: "is the photo digital"... By this I think you mean that someone took a photo with a digital camera of a scene versus taking a photo with a digital camera of a printed/film photo. One cannot tell this by the signatures alone.

08-30-2011, 08:44 AM	#22
HBPujWBe Join Date Oct 2005 Posts 442 Senior Member	I wrote this in my first post, as an edit, but I'll write it here too in case people miss it: Obviously the black rectangle over the child's face is part of the editing, but that could easily be done in Paint. After doing some comparisons, the most striking thing about this photo is the number of different camera signatures. I also noticed that the "GIMP" signature is present in all photos, edited or unedited, so that's probably a false alarm. From here: The "subsamp match" column indicates that the type of chroma subsampling used in the image matches the type associated with the signature entry in the database. In general, the subsampling should match for the signature to be a reliable match. The list of cameras and software under the signature search are all ones that have the same signature as the one identified in the image. It means that those other cameras and software tools could have also produced images with the same signature, not that someone used multiple cameras or software programs to produce the image. However, with regards to your question: "is the photo digital"... By this I think you mean that someone took a photo with a digital camera of a scene versus taking a photo with a digital camera of a printed/film photo. One cannot tell this by the signatures alone.
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