First, yeah, I know this is an older thread... =)
IMO this looked like part of the shadow from a tree peeking through - sometimes background objects can create quite an illusion to people wanting to see something, or someone whos hopeful to catch something on film. I've got some crazy pics, but most can be attributed to background objects, lighting, etc.
But, I'd like to say something re: the link posted above about Orbs.
On the site it says:
Q: What is an orb?
A: An orb is a ball of spiritual gas.
Well... I'd like to debate that - if thats the case, orbs are what keep me from going to church - ya hear all kinds of 'spiritual gas' there being 'preached' weekly. (Ha ha, bad religion joke - spiritual gas, get it? ) Sorry... but seriously...
Some believe they are evidence of ghosts - which in itself is in debate - whether orbs exist even (as compared to moisture/dew, dust, etc.)
But those who do most often attribute them to 'energy' not 'gas'. Gas would likely visualize as a vapor - not as a circular singular particle. (I could go into a bad joke about Chorus Line lyrics... One, circular sensati... NM. I said I COULD.. but I wont.)
=) Not to nit pick, but if offering reference, Im in the opinion of: attempt to debunk first, then offer factual information.
Im a serious skeptic who wants to believe, but I'd like to see it for myself before I believe a thing.