Yes. Also, a photo from many digital cameras will also have EXIF data.
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.
A photo from a camera “may” have EXIF data.
I often use a program called “jhead” that effectively removes that data and more. A really good command OpenSource application.