Sorry, last 5 posts have all gone up together. I have been taking pictures, just not editing/producing/blogging them!
Anyway, all 5 shots have something in common – difficult lighting. A previous post of a building site near Barbican discussed this a little, but did not try to eliminate any of the casts, in fact the dual lighting is what made the image interesting. These last 5 images have all had difficult lighting which required the removal of a cast in only part of the image.
This shot had some blue left in the sky contrasting with the (very) yellow tungsten street lights. Together with the noise it was almost impossible to deal with so I just went B&W!
The next down had a general yellow cast from the tungsten light in the loft, combined with very cool blue light coming through the window. I balanced the lighting for the tungsten then eliminated the blue in and around the window with some RGB curves.
The alley way had both tungsten and fluorescent lighting. The street scene had a general blue cast from the cloud/fog but some tungsten creeping in from street level. Finally, the street scene at night had some blue daylight still in the sky, fluorescent from the billboard, tungsten from the street lamps and also the car headlights which are a combination of lots of things!