Re: "evidence tampering"
The idea on working with an image is to scan or enter via RAW
conversion and maintain it
as a TIFF or Photoshop file until you are 100% sure that is the way
you wish it. You can then save it
as a fine quality JPEG and you'd never notice any loss. If you
continue to work on it and save it again,
THEN you'll perhaps notice loss of data.
On September2006, at 8:51 PM, Camden Hardy wrote:
My question, which I figure some of the digital mavens around
here would know, is, can you see by examining a jpeg (or digital
file) if that's been altered as apparently you can with video?
If done correctly? Absolutely not. :)
I would assume if it's been saved in a different format, editing
I would suggest staying the hell away from jpeg if you have any
not be detectable. But if it were saved in the same jpeg format ????
of making a print (or any other reproduction...or in general).
Jpeg is a
lossy format, which means that every time you save as a jpeg the
compression throws away data. If you were to save the modified
jpeg as a
tiff, png, or any other lossless format, you wouldn't lose any
and could (in theory) get away with it.