@RobertTheFat wrote:
@Skirball wrote:
No, both the camera, and the hard drive, require a host controller to upload/download. The host controller can be a computer, laptop, tablet, phone, etc.
Don't most external hard drives require a Type A USB receptacle? I never saw one of those on a phone.
Well, all the external drives I have either have the old Type B female port, or the new 3.0 mini. But that's irrelevant, you can get a USB cord with practically any combination of connectors on it. Which is also irrelevant, because to use a phone or tablet as host you need to get a host cord (USB OTG), which typically is a micro USB to type A connector.
But my point was simply: that both the camera and the hard drive are client devices (aka slaves). You need a host to communitcate between the two, they don't have the software required to do that themselves. The camera's computer certainly is powerful enough to handle this function, but to the best of my knowledge it's not there. Even in cameras like the 6D and 70D, which can not only serve as a host but do it wirelessly.
