What is EXIF Data?
When a digital camera takes a picture certain information is added to the image file to provide information about the image. A whole lot better for most of us than the old make a note method.
This information is referred to as EXIF data and is quite helpful. As well as providing a name, it also includes the date and time, the camera, the settings and exposure and other good stuff.
Other information can be added to the image by the higher end cameras or afterwards with various software. Including the name of the image creator/owner and copyright.
This becomes important because if you take a picture and it becomes widespread because it is good art or it captured the kiss of e century.
Now there is a demand for it in news stories or to be published in a book. Even if you don't care about the money, is it not a good thing to have your name on the picture, not your evil twin, or ....
When you post an image to social media, it is yours and, under US Law you retain copyright under most conditions. Except for the likes of Facebook/Instagram which, buried deep in the user agreements, takes the right to use your image as they see fit when you post it.
I am not aware of such a cause in the services I use, Google and Twitter, and I want to have control of my images. It could offend me greatly to have Vladmir Putin merged into a nice river scene, and I can declare use limits in this EXIF Data along with the copyright information. (FWIW, There is a Transformative use option for copyrighted works, and I'm not going into that)
What I add in as a default:
Copyright 2016 Bill Ries-Knight
Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
What my camera adds in...
I use Adobe Bridge to manage and modify the EXIF information.
Now, I may not want the more personal email, but I, and I'm sure anyone else semi-serious, would like the copyright attached to the image.
But... If that information is not supplied along with the image, "how is anyone to know,"
would come a lawyers question in a copyright claim.
I can ramble on, but instead I'll share a couple of places you can learn more. Because IANAL.
This post goes with:https://plus.google.com/u/0/+BillRiesKnightSteelhoof/posts/bMatmZGEWKHhttps://creativecommons.org/https://en.wikipedia.org/wiki/Exchangeable_image_file_formathttp://web.archive.org/web/20131019050323/http://www.exif.org/specifications.html
A document on the EXIF 2.2 standardhttp://web.archive.org/web/20131018091152/http://exif.org/Exif2-2.PDF