Well after taking a closer look I don't think its light effects.   Generally on lens flares or other light effects the patterns within multiple effects on a given pictures would match.    Clearly on this one they do not.
See the enlarged version of both orbs.
As I said before, its possible its dust or something similar.   Just seems a bit big for that.   Just never seen a orb that big caused by dust.  But thats just me.