Yukio Miyamoto is a renowned illustrator who has been publishing books in Japan about using Adobe Illustrator and Adobe Photoshop for several years. He has also been a contributor to American books on Illustrator, including the Illustrator Wow! books and Real World Illustrator.
His books in Japanese cover using Photoshop and Photoshop Elements (with Illustrator?) for illustration and design. Publications on Adobe Illustrator range from general instruction for a particular version, to workshops in specialized areas of the program.
He is internationally known for his photorealistic techniques, requiring an expert knowledge of every aspect of Illustrator.