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Author Topic: High Dynamic Range (HDR) imaging defined (Start Here!)  (Read 8646 times)

blaydese

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High Dynamic Range (HDR) imaging defined (Start Here!)
« on: July 17, 2012, 06:15:47 AM »
High dynamic range imaging
From Wikipedia, the free encyclopedia
Category: Alternative photography

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High dynamic Range Imaging
(HDRI or just HDR) is a set of methods used in
imaging and photography, to allow a
greater dynamic range between the lightest and
darkest areas of an image than current standard
digital imaging methods or photographic methods.
This wide dynamic range allows HDR images to
represent more accurately the range of intensity
levels found in real scenes, ranging from direct
sunlight to faint starlight, and is often captured by
way of a plurality of differently exposed pictures
of the same subject matter.

In simpler terms, HDR is a range of methods to
provide higher dynamic range from the imaging
process.

How it works:
Non-HDR cameras take pictures at one exposure
level with a limited contrast range. This results in
the loss of detail in bright or dark areas of a picture,
depending on whether the camera had a low or high
exposure setting.
HDR compensates for this loss of
detail by taking multiple pictures at different exposure
levels .....


 

...and intelligently stitching them
together to produce a picture that
is representative in both dark and
bright areas.

HDR is also commonly used to refer
to display of images derived from
HDR imaging in a way that
exaggerates contrast for
artistic effect.


http://img.photobucket.com/albums/v660/firaq/girl-hdr.jpg

The two main sources of HDR images are
computer renderings and merging of multiple
low-dynamic-range (LDR) or
standard-dynamic-range (SDR)
photographs.

Tone mapping methods, 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.

Thanks to Canon Rumors for creating a HDR
section for the HDR enthusiasts. 

Remember, it's supposed to be over exposed,
washed out, bleeding color, blurry, etc. etc.   

Anyone can be
a critic, only a
few dare to be
the artists.




Google Image Search Results / Example are:











Peace! 8)
« Last Edit: July 17, 2012, 06:59:08 AM by Canon Rumors »

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High Dynamic Range (HDR) imaging defined (Start Here!)
« on: July 17, 2012, 06:15:47 AM »