Quote Originally Posted by Bambi View Post
so here is where I am totally lost......
Exif data is data that is saved with the photo file. It includes stuff like the model of camera, lens used, time the shot was taken and date, the settings such as f-stop, shutter speed and also the focal length (18mm, 50mm, 400mm etc).
When you save the file as a jpg with a program that retails this data it allows us to see this information when viewing it in websites such as Flickr. When using Firefox browser, we can use an addon that allows us to right click and view this data also.
This exif data is lost when combining several files so HDR does not retain the data. However, single photos do.

Does that help?