Obama PDF Explained: Absence of Chromatic Aberration is Not Proof of Forgery





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Published on Apr 30, 2011

Absence of Chromatic Aberration is Not Proof of Forgery and Alteration

Specific features and effects in the „Long Form Birth Certificate" PDF are supposedly „proof" of forgery and data alteration.

I have investigated the features that are claimed as proof of forgery - I have tried to reproduce them with a sample document that was scanned and processed according to a simple routine. I use the AP version of the Obama BC as comparison.

claims are:
There are layers in Illustrator!
the layers are in groups!
there are clipping paths!
„linked files"!
Rotation and transform history!
differently scaled elements (background vs foreground)!

All above were explained in my previous 2 videos as normal processing effects of Optimize Scan in Acrobat.

All these were debunked by the simple "Optimize Scan" function.

Now, the most recent claim that the only way that PDF could be created is a deliberate forgery with data alteration, ist "Absence of Chromatic Aberration".

I investigate this using Optimize Scan and OCR (2 clicks)

This is something that might be done as a routine process whenever you are dealing with digizing thousands of documents in a big organization

I reproduce the "loss of chromatic aberration" by a generic 2-click procedure both for a sample file and the AP version of the obama certificate.

Notice, I am not claiming that exactly this process was used on the files.
What I demonstrate is "Absence of Chromatic Aberration is Not Proof of Forgery and Alteration". I also expose a few other "Smoking guns" as simple processing results: Differences in grayscale level or solidness vs fuzziness of text etc.


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