Signal processing on the mountains

July 29, 2013 0 commentsSkip to comment section

The difficult thing of post-processing this image was enhancing the contrast in the distant mountains. I realised, during shooting, that the mountains were barely visible. Hence I decided to improve the signal / noise ratio by taking, instead of one correctly exposed photo:

  • 4 shots at the nominal exposure
  • 4 shots at -0.7 EV
  • 4 shots at +0.7 EV

Eventually I merged the images with photoshop (Smart layers, Mean) to obtain a much cleaner image over which applying a dramatic curve layer. Without this weird procedure, the noise would have been too much.

Before (single shot)!
In Marina di Pisa (Pisa) there is a new commercial port, already working, albeit still being erected. Behind this levee, you can see, distant, the Alps (Alpi Apuane) of Tuscany
In Marina di Pisa (Pisa) there is a new commercial port, already working, albeit still being erected. Behind this levee, you can see, distant, the Alps (Alpi Apuane) of Tuscany

PS: the sea waves moves of course, so that part of the frame needs to be created from a single shot.

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PhotographyPhotoshopanalisi dei segnalisignal processingSmart Objects

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