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HDR Basics

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David Lawrence's presentation to the Photography Guild of the Lexington Arts & Crafts Society

David Lawrence's presentation to the Photography Guild of the Lexington Arts & Crafts Society

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  • This is an example of a High Dynamic Range photo.
  • This is an example of a High Dynamic Range photo.

HDR Basics HDR Basics Presentation Transcript

  • HDR Photography Basics What is it… how do you shoot for it… and how do you process it.
  • What is “Dynamic Range”
    • The Dynamic Range of an image is the “ratio between the brightest and darkest parts of the scene.” An example of a low dynamic range.
  • Photos by Trey Ratcliff (http://www.stuckincustoms.com)
  • What is HDR Photography?
    • “ HDR is an acronym for High Dynamic Range. It is a post-processing task of taking either one image or a series of images, combining them, and adjusting the contrast ratios to do things that are virtually impossible with a single aperture and shutter speed.” (from Trey Ratcliff, http://www.stuckincustoms.com/hdr/)
  • What is HDR Photography?
    • Humans eyes can see a much wider dynamic range than a single DSLR image can capture. HDR photography combines the “highs” and “lows” of multiple exposures into a single image.
    • For me, it is a way to create a photograph that better captures the highlights (bright whites) and shadows (the dark blacks) that might get lost when taking a photo.
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  • How to shoot for it…
    • Mount your camera on a tripod
    • Use manual or Aperture Priority mode. Take at least three exposures: good exposure, under-exposed, and over-exposed. Number of exposures varies based on how wide the dynamic range of your scene is. “I recommend using a camera that has autobracketing. Autobracketing is the ability for your camera to take at least 3 pictures right after one another, each at different exposures. Sometimes it’s called “Exposure Bracketing”. If you have a DSLR camera, then you probably already have this ability.” (www.stuckincustoms.com)
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  • How to process it…
    • Use “HDR” software such as:
    • Photomatix Pro
    • Nik HDR Efex Pro
    • Photoshop 5
    • A GREAT tutorial can be found at:
    • http://www.stuckincustoms.com/hdr-tutorial/
  • David’s example
    • Now I will demonstrate how to use Photomatix Pro with three exposures…