[robski]

I would say the shot is slightly over exposed but not the cause of the halo.

Out of interest do you have a lens filter fitted ? if so try without. Filters especially cheap ones cause more problems than they solve.

I assume your using the D700 kit lens ? Not being a Nikon man I don't know what weak points this lens may have.

If you look at the attached the light off the highlights are flaring into the no or little light areas at an angle of 45 degree. This will be far less noticeable on scenes without white highlights and very little light.

As somebody who regularly shoots through double glazing for my kitchen window bird photography combating flare caused by the window is something I'm an old hand at.