So if I figured out how to upload an image from my digital camera could people be able to find out that it was genuine, when the photo was taken, etc?
For instance, I posted some photos my husband took with his digital camera, at http://butterdezillion.wordpress.com/2011/01/28/spring-will-come/ . Can a person look at those and determine that they are genuine and when they were taken?
There’s a PDF I uploaded there also, in which I took an image from the web, added words, saved as a PDF, and uploaded it as a PDF. Is there any way for people to know whether I altered the web image before I saved the PDF?
I want to make sure that what I post can be verified as genuine and unedited. If putting things in a PDF obscures the genuineness then I need to avoid PDF’s.
The EXIF data will include the date (assuming that the date and time were entered correctly in the camera’s internal calendar), time, exposure setting, file type, aperature setting, dpi, etc.
One can easily take a photograph with digital camera, download it, edit it, and upload it back in the camera with fake dates. Ye old polaroid instant camera pictures happen to be the most resistant to tampering.
I could read data on image dimensions, bit depth, and dpi, but all the other data was gone.