High Dynamic Range
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High Dynamic Range

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A quick overview of what HDR actually is

A quick overview of what HDR actually is

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High Dynamic Range High Dynamic Range Presentation Transcript

  • The human eye can see about 12 different exposures of light:
  • But a camera only sees about 5 exposures:
  • These 5 exposures are set by you (or the camera’s Auto mode!):
  • These 5 exposures are set by you (or the camera’s Auto mode!):
  • You can’t pick up the extreme detail in the shadows and highlights:
  • You can’t pick up the extreme detail in the shadows and highlights: Too Far Apart!
  • Take three photos at different exposures:
  • Take two or more photos at different exposures:
  • Take two or more photos at different exposures:
  • Take two or more photos at different exposures:
  • Take two or more photos at different exposures: All 12 ‘Exposures’ Covered
  • Take two or more photos at different exposures: There is a way to get the same result using a single RAW photo – but that’s for another day
  • BUT THERE’S A PROBLEM…
  • True HDR needs to use 281 trillion colours (16 bit) To discourage professional photographers using PSE, Adobe limits it to a mere 16 million colours (8 bit)! But luckily it can be faked… GEEK ALERT!
  • There’s free (and paid for) software that will do the job for you: HDR Photomatix HDR Fusion …and others …or use layers and blending modes in Photoshop…