Yeah I know, but Root Explorer displayed you can't write to folder would you like write permission and I selected yes. ES didn't give me this option when I tried to copy a file, and I verified that ES had root access too.
I don't know if this is a fix but it seemed to work for me. I decided to use Root Explorer instead of ES File Explore. Root Explorer gave me writes permission and everything works now with copying to SD Card.
I agree with you that they should have a camera case for their newest phones, but I guess Sony have other priorities to worry about. It don't see why it would take much to design one for our phone when they already have it for others.