The most impressive type of halo is the one with flames, used to represent wrathful deities, like this Fudo Myo-o from Takahata Fudo Temple (Kongo-ji), in Hino, Tokyo, one of the most beautiful statues of this kind. The flames are signifying the purification of the mind from material desires and the power to consume the evil and the defilement of the world...
EXIF info:
Nikon D700
Lens: 35mm F/2D
Focal Length: 35mm
Aperture: F/2
Shutter Speed: 1/60s
ISO Sensitivity: ISO 2000