Content authentication with M11-P and Capture one

[Andre1960]

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I recently updated from an 12 years old Leica M240 silver to an M11-P black. 
No troubles on freezes or anything. Latest firmware. 
 

When I activated the Content Authentication in the camera menu and drag the edited test file into this website which checks the file it says there is no info. 
I tried with an edited Jpg from capture one and a DNG file straight from the camera. 

Maybe I’m overlooking something. 
many thoughts or ideas. 

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[Almizilero]

The thing about CA is that most software doesn't support it yet Don't know about Capture One, but Lightroom (Classic) doesn't, while Lightroom Cloud (or whatever it's called) is supposed to support it. Nonetheless, DNG directly from camera should work. I just gave it a try and it worked fine, before and after import into Lightroom. Crosschecked with files from other cameras: They say no info as well.

Do you use User profiles in camera? I'm not sure, but it could be that CA has to be activated per profile. E. g. when you saved the profile and only afterwards activated CA, it will be deactivated if you load that profile again (as that was the setting when the profile was saved).

[frame-it]

2 hours ago, andre.hilkens@gmail.com said:

Maybe I’m overlooking something. 

drop the image in here >>> https://contentcredentials.org/verify

that's how some companies would actually check the image

[Andre1960]

yes I use 2 profiles and maybe it this that caused the problem  although the image on the camera screen had this small CR icon on the right side  

I tried it again with a DNG file (before import to Capture one) and it works fine now. 
but when I import the same dng &  edit it, the exported jpg does not show any info anymore. So all the CA info is lost. 

 

[LocalHero1953]

9 minutes ago, andre.hilkens@gmail.com said:

yes I use 2 profiles and maybe it this that caused the problem  although the image on the camera screen had this small CR icon on the right side  

I tried it again with a DNG file (before import to Capture one) and it works fine now. 
but when I import the same dng &  edit it, the exported jpg does not show any info anymore. So all the CA info is lost. 

 

Am I missing the point? An edited file cannot be considered an original ‘factual truth’, so would have lost the CA tags, wouldn’t it? Or are files created with CA still marked somehow as ‘edited’. (I may be displaying my ignorance about how CA works!)

[Andre1960]

vor 8 Minuten schrieb LocalHero1953:

Am I missing the point? An edited file cannot be considered an original ‘factual truth’, so would have lost the CA tags, wouldn’t it? Or are files created with CA still marked somehow as ‘edited’. (I may be displaying my ignorance about how CA works!)

This is the point. Once you shoot a picture with CA it is and remains embedded into the file no matter what and who edited the file. It tracks the history of the file so you can see who and when it was edited.  (it is not the same as meta or exif data that can be stripped)

Of course anybody can use and "steal" the file, for AI for instance,  but it should then be possible to proof that the image (or part of it) was mine becasue of the embedded credential info.

I understood that this requires a special chip inside the M11-p. This chip is obviously different (or programmed diffrently) for every M11-P.

 

[Almizilero]

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Correct, the idea is that there is a record of all the changes done to the image. In theory, it should say original file -> file edited by Lightroom (adjustment of +1EV to highlights) or something in that vein. But as far as I know only certain software supports this to date and you have to actively want to keep the CA info! As I said, no matter what the settings, Lightroom Classic will not support this at all right no. But even if it did, you need to be carefull with the export settings.

I often use no metadata except copyright during export in LR. Even if it supported CA, this would kill those data. Only an export with full metadata will also keep the CA. So they're easy to erase, but you will still be able to proof that yours is the original if some steals it and deletes the data or does some changes to it.

As far as I understand it, this is mostly for media use where the outlets want to proof that the image they show has not been altered (cropping away important parts that change the story the image tells, adding stuff via AI and so on). With CA intact, every edit is kept on record and there will always be a “thumbnail” of the original file.

[Photoworks]

52 minutes ago, andre.hilkens@gmail.com said:

This is the point. Once you shoot a picture with CA it is and remains embedded into the file no matter what and who edited the file. It tracks the history of the file so you can see who and when it was edited.  (it is not the same as meta or exif data that can be stripped)

Of course anybody can use and "steal" the file, for AI for instance,  but it should then be possible to proof that the image (or part of it) was mine becasue of the embedded credential info.

I understood that this requires a special chip inside the M11-p. This chip is obviously different (or programmed diffrently) for every M11-P.

 

for now, the collaboration is with adobe. and the only software that supports edits is adobe photoshop and lightroom.  and only basic editing is allowed, Just what is approved by the press submission guidelines.

Some were explaining how it works, basically, adobe makes a screenshot of the changes and saves it to the verification website and presents when checked.

If you are using any other software all this info gets lost until it is supported.

For most people, this is useless and can slow many editing systems down. Most people who use the M11p have turned it off already.

[Andre1960]

Thanks to all for your input. I will place a support request at Capture one.