Friday 10 June 2011

Control the strength of a colour

 This was a fairly straight forward exercise to see how altering the exposure of a subject will affect its colour. I chose my own front door as it is a good strong colour, so any changes should be obvious.

No Exposure Compensation
    The image above is with no compensation and the colour is quite strong but slightly lighter than the actual door.

Under Exposed by 1/2 Stop
  This image is much closer to the true door colour, it under exposed by 1/2 a stop and the colour appears deeper.
Under Exposed by 1 Stop
   This image is under exposed by 1 stop, the red now appears darker and more saturated than the actual door, although in effect it is only the brightness of the image that has changed, the saturation of the image cannot be changed by changing the exposure alone.

Over Exposed by 1/2  Stop
   The picture above is over exposed by 1/2 a stop, the colour is starting to appear washed out and has no real depth, it has brought out more of an orange tone.

Over Exposed by 1 Stop
  This image is over exposed by 1 stop and is so washed out it bears almost resemblance to the original door, I can't believe that it is only the brightness of the colour that has changed and not the saturation.
  The second image where the door was under exposed by 1/2 a stop is the closest to its true colour, this would be because the door is darker than a mid tone so the cameras meter would over expose.
  I think that under exposing to create the impression of a stronger colour is definitely a technique that I will utilise in the future.

No comments:

Post a Comment