Has anyone does studies on using a different CDN domain name for images on a site? Here is an example:
or
![](<a)http://cdn.mydomain.com/image.jpg>
mydomain.com ranks highly and many images show up in Google/Bing image searches. Is there any actual data that says that using your real domain name for the CDN has benefits versus the default domain name provided by the CDN provider? On the surface, it feels like it would, but I haven't experimented with it.