You can't. But you could watermark it so people don't steal it.
A moving image.
To copyright an image, you can simply create it and it is automatically protected under copyright law. However, to have legal proof of ownership, you can register the image with the U.S. Copyright Office by submitting an application and a copy of the image.
Owning an image or the copyright to an image are the same thing. When you hold the copyright to an image it is yours to do with whatever you will, and you can decide who has permission to use it or not. There is no difference.
Yes, altering an image does not automatically remove its copyright. The original creator still holds the copyright to the altered image.
It is likely because the image is much too big for tumblr. If it has been replaced by a little gray box, the image is too big. Try making it smaller :)
Copyright is automatic, so it will be the date the image was created.
If you wish to reuse a copyright-protected image, you need permission from the copyright holder or an exemption in the law.
You cant do that. You have to take a screenshot on your computer of the facebook page or comment and post it as an image to tumblr.
The image is still owned by and under copyright by the original creator of the photographer who created the ORIGINAL image. Taking a photo of someone else's photo does not transfer the copyright to you (the iPhone owner).
With permission from the copyright holder, yes.
To copyright an image or logo, you can register it with the U.S. Copyright Office. This involves submitting an application, a fee, and a copy of the image or logo. Once registered, you have legal protection against unauthorized use or reproduction.
Copywriting an image has to be done with the copyright office of your country. If you have uploaded the image to Facebook or other social media sites, you may not be able to copyright it.