Digital Images Manipulation Safe?
Hey All,
Just returned from a policing conference and thought that this little timbit would be interesting to you.
The Ontario Provincial Police (OPP) are slowly going from conventional photography to digital.
There was always the argument that digital images can be altered, lose visibility and integrity, as well as other arguments. But it seems that the Ident(ification) Team has found a product that garanties against these arguments.
It's the Nikon D1 Series digital cameras.
It uses .nef file format (which seems to be a nikon only format) which after snapshot is taken, cannot be altered. That's right, the original image/snapshot from the Nikon camera cannot be altered (kinda like a negative).
Afterwards, for printing purpose, the police convert the image to both .tiff and .jpg. All original files are placed onto cd and stored in the evidence room/storage.
Here are two examples of the D1 Nikon series
D1 H
D1 X
Now that sounds great and all but is that possible? Can the file remain write-protected? Since it is a nikon extension (.nef) which appears to only be view by their software (Nikon View x Software (x = version)) as well as having to install a plug-in to (I'm guessing) view the files. Does this make the "original" file safe?
Somehow, I can't believe it. If there is a will, there's a way, no? Would you think that if someone could create a program that reads the .nef files using the plug-in they could somehow manipulate the images and save the changes to the .nef files? Or create a plug-in with changes to the reading code, making the .nef file modifiable?
I'm curious to know, that if it could happen, to ensure or not if these images could in fact be discredited in court. I'd hate to have something discovered about how to modify these files and word getting out during a HUGE court case where the evidence was photographed by a Nikon cam and the images are in question. (Get what I mean?)
P.S. Here's a link to images from the Nikon D100 (sister to the D1 series) using the .nef to show quality of images (in .jpg) and explain the conversion sequence from .nef to .jpg
Link