Quote Originally Posted by barnacle View Post
What's the colour temperature of the lighting that's overexposed (it's a while since I was last in NYC!)? A peak in the output in the red end of the spectrum, to which the film might be particularly sensitive, combined with reciprocity failure in that colour layer?

Neil
Not sure what the color temp would be but I do know the Empire State Building has switched to LED lighting,
there are certain Hoidays that the lights are animated, which ruins most long exposures.