Digital Rebel 350 Digital Memories Captured With Canon EOS 350 Digital Rebel Digital Rebel 350 Digital Memories Captured With Canon EOS 350 Digital Rebel: High dynamic range imaging(Hdr)

Digital Rebel 350

11 October 2010

High dynamic range imaging(Hdr)

In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allow a greater dynamic range of luminance between the lightest and darkest areas of an image than current standard digital imaging techniques or photographic methods. This wide dynamic range allows HDR images to more accurately represent the range of intensity levels found in real scenes, ranging from direct sunlight to faint starlight.


The two main sources of HDR imagery are computer renderings and merging of multiple photographs, the latter of which in turn are individually referred to as low dynamic range (LDR)or standard dynamic range (SDR) photographs.
Tone mapping techniques, which reduce overall contrast to facilitate display of HDR images on devices with lower dynamic range, can be applied to produce images with preserved or exaggerated local contrast for artistic effect.

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6 comments :

  1. Even the worst pictures you've taken, with some modifications, can be beautiful

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  2. That's a cool resource when it comes to picture improvement.

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  3. Hi WebbieLady, these adjustments have been created with Photomatix Pro is not difficult to create special effects with this software

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  4. I'll try to make according to u r tip sangesh.com.np

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  5. can you make hdr using jpeg images or just raw images? Could you use adobe photoshop?

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  6. First, sorry for the translation that may have problems ....
    Thank you all for your questions. I approached this technique recently and I have a lot to learn too.
    Ideally, you can build HDR files with raw files, combining the same photo with different stop, for example: +1 +2 +3 -1-2-3, saving the file in jpeg, the raw file you can not change in the most absolute way. raw files have more information about the photo, this is my opinion. The operation must be made at the time of the photograph with your camera. Keep in mind that every brand of camera has its own settings for the creation of the file. Clearly, overlapping the shots of your photos, not to make it move, you're forced to use a tripod. But you can create your HDR file, even just using a jpeg file. If you have a bad picture, you can decorate the way you want. I found that adobe lighroom can help you with this, saving a copy of your jpeg files with various stop or -1-2-3 +1 +2 +3. As for creating HDR files with Photoshop, I enclose this video file that can help you build your HDR file:

    http://www.youtube.com/watch?v=CVuDbcAfN_I
    Another nice tutorial:
    http://www.vanilladays.com/hdr_tutorial/

    Thank you to all for your visits

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Digital Rebel 350 - Digital Memories Captured With Canon EOS 350 Digital Rebel

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