Monday 10 February 2014

Burning in the sky (38)


Requirement
1 pair of images, original vs. processed

Purpose
  • To experiment with the Burn Tool (PS) to increase contrast either (a) to compensate for the camera being unable to process the variation in brightness between sky (when slightly overexposed) and land (when correctly exposed) or (b) to add contrast, if not drama, to an image

Technical learning
  • The camera sensor has a lower dynamic range than the eye
  • Therefore it often fails to capture successfully (that is, as the eye sees it) the variation in brightness between sky and land
  • One way to compensate is to use a ND grad filter (assuming a straight horizon line). Another is to shoot RAW and blend exposure adjusted segments of the image.
  • A third technique is to use the Burn Tool, which darkens the tone of any pixels to which it is applied
  • Even where a the range of brightness across a scene fits within the camera's dynamic range, the Burn Tool can be used to create more form in lighter areas of the image  
Exercise instructions
  • Use the Burn Tool to enhance a slightly over-exposed sky

Images and review



Beach at Burnham-on Sea
 
Original image - insipid sky




Burned-in sky








 

No comments:

Post a Comment