More on the Gandalf Photos from TVNZ|
Tehanu @ 10:57 am EST
The 'Wheel' we can see in these two
"In rode the Lord of the Nazgul, under the archway that no enemy ever yet had passed, and all fled before his face. All save one. There waiting, silent and still in the space before the Gate, sat Gandalf upon Shadowfax...."
Plus the white horse has no bridle or saddle, which is how Gandalf rides him.