This Saturday evening from 8pm-midnight, the Empire State  Building will be illuminated with gigantic photos of endangered species. It  should be an amazing display and a great chance for any photographer to capture  something unique and beautiful. But the question is, “What’s the best way to do  this?”
  First you will need to find a clear shot of the building. It  is reported that the projections will be on the south facing side of the  building, and the best angles of the south facing side of the Empire State Building  are along 5th avenue north of Madison Square Park. If it is possible  to find a rooftop even better.
  Taking photos at night always presents problems due to lack  of light. Here are the potential problems and solutions while photographing  this event:
  Problem: Lack of  steadiness due to slow shutter speed. 
    Solution: A sturdy tripod. Be sure to turn off Image  Stabilization or Vibration Reduction if you plan to use a tripod. 
  
  Problem: Focus –  it is often difficult to manual focus when it’s dark out. The camera may also  have problems with focus as well. 
    Solution: Try using the magnifying  function in live view. Stop your aperture down to f/11 or f/16
  
  Problem: Camera  shake due to shutter release. 
    Solution: Use Live View or Mirror  Lock UP along with a cable release or use a timed release.
  
Problem: Empire  State Building and the images projected are blown out, due to the fact that the  background is very dark relative to the building and projection. 
  Solution: Under expose the image by  about 1-2 stops or until you get the right exposure on the building w/ the  projection.
  
Problem: Even after  following the suggestions above, the images are still not sharp due to camera  shake. 
  Solution: If you have turned off  IS/VR and you are using a remote/cable shutter release the problem likely lies  below your feet. In Manhattan, there are numerous subway lines and tons of  traffic moving by every road and this may add vibration to your image. If you  are on a rooftop you may have problems with the wind or even the building.  Buildings move and sway – the taller they are the more likely they are to move.  If you are on a balcony there is a greater likelihood of movement. The best you  can do is to speed up your shutter speed. This will make it difficult to shoot  f/16. You will need to either bring your ISO up or you will need to open up  your f/stop. If you are sure that you have good focus there should be no reason  why you wouldn’t want to simply open up your f/stop.
  
Problem: What  mode to shoot in?
  Solution: If you are having focusing  problems, you would probably want to use Aperture priority and set the system  to f/16 or there abouts. If you are having problems with shake you will want to  use Shutter Priority and set the fastest shutter speed you can get to without  having to compromise your ISO too much. If the projected images are fairly  consistent in tone and contrast and there are not a lot of clouds moving in and  out of the sky, then you can use Manual mode.  
  
That’s it. Have fun everyone.
  
Please note that the images in the NY Times article of the ESB is a computer generated mock up of what they would like it to look like. Whether or not it will look this dramatic is yet to be seen. Further more the image is taken from the west facing east. It is reported that the images will be projected on the south side of the building which means you will be facing north.
http://www.nytimes.com/2015/07/31/movies/illuminating-the-plight-of-endangered-species-at-the-empire-state-building.html