"Visible artifacts, usually in the shape of the lens iris, are formed when light follows a pathway through the lens that contains one or more reflections from the lens surfaces.Flare is particularly caused by very bright light sources either in the image – which produces visible artifacts – or shining into the lens but not in the image – which produces a haze.[dubious – discuss] Most commonly, this occurs when shooting into the sun (when the sun is in frame or the lens is pointed in the direction of the sun), and is reduced by using a lens hood or other shade."
This photograph from my book is just one example of lens flare 'orbs'. There is also another example of this same 'angel' effect which was taken with the same camera when I was in China.
Digital phone cameras also have their own type of lens flare orbs, which I have found from my own phone camera photographs, as well as in those that people have sent to me or posted on my fb.com/OrbInsightsandInspirations page. They usually appear as a very small bright orb, sometimes green and often with another 'half moon' area of light around them.
The lens flare orbs either enhance the photograph or not, depending on how it is perceived. They are another wonder of light, in this case sunlight; and technological magic!!