Steve Perry wrote:
To clarify, in the US, your creative work is protected by copyright the moment you click the shutter. Registration is optional. However, registration gives you a much stronger legal position if it comes to it. As of now, I don't register my images - however - after doing some research I may start. $55 for 750 pics doesn't seem unreasonable.
I wholeheartedly agree that for your images it is well worth it to register them. And I am not an expert by any means but I believe your damages are limited if you do not register them in a timely manner. Also as you would be registering Published images you can easily publish any and all of the images you want to protect on your website. The 750 images in the group must all be published or all be unpublished. I believe the rule is if it is on a website and available to the public it is considered published.