Orbs?

A few weeks ago I went on a college trip to London where we visited the Houses of Parliament. Whilst I was in Westminster Hall I took a photograph of my friend. When I got home and looked at the picture and saw that there was an orb. None of the other pictures that I took there had orbs on them and I was wondering what Merry Moot members thought caused orbs to appear?

Here is the photo that I took, so that you can see the orb for yourself.

Edit: I have just looked at the picture and I have noticed some fainter orbs behind my friend.

Sorry to say Annie but I think this is a light flare on the lens. Light gets reflected off things and causes this effect. Gina is a photographer and we've had this appear in the oddest of places.

Orbs of light from a supernatural point of view are not something I have personally witnessed although I know of one person who has seen the infamous ball of fire that has been described througout history as floating balls of flame that slowly move through the air.

I agree that it could be lens flare, but I am interested as to what other members think that it may be and if they have any interesting pictures to share. So what do other people think that orbs are?

As an aside, I think I have seen actual balls of light, often out of the corners of my eyes. I suppose it could potentially be something else, but I have tried to explain it as some other phenomenon, but I can't.

It really could just be a simple light trick, a reflection or refraction or whatever it may be, the thing of taking two identical pictures doesn't really work out in practical terms due to the constant movement.

I think one thing that would be good would be to get several pictures and compare the orbs.. checking colour and size is something i'd do also looking at what common features the areas share.

And there's also the wikipedia route (Yey wikipediiaaa)

Backscatter in photography - Summary, dust reflects flash and makes orbs, check it out for yourself if you wanna, its just Backscatter for the article.