Sundog

Never knew these even existed until me and my collegue looked up at the sky during a break from a wedding shoot. Without shades on we would never have seen it. Had to massively underexpose to get this even remotely visible.
Good ol' fisheye lens, I knew I'd find a use for it.

Location - Shepherd Neame Brewery, Faversham, England

Edit: I've done some research and discovered this to be a "Sundog"

"These appear when the sun is low in the sky and its rays catch the thin vapour formed of ice crystals which lies in the atmosphere six miles above the Earth's surface.

The rays are refracted by the crystals to produce what looks like a halo round the sun.

Sometimes, as here, they display a spectrum of colours which has led to them being mistaken for full circle rainbows.

In centuries past, they were thought of as signs of ill omen. These days they are most often mistaken for UFOs." - the daily mail