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=Faux HDR=
=Faux HDR=


First off, I cheated at this.  I took 1 picture (which wasn't really a great picture to begin with) and manually manipulated the colors to over & under expose.  For the first test I wanted to see the merge results.
* First off, I cheated at this.  I took 1 picture (which wasn't really a great picture to begin with) and manually manipulated the colors to over & under expose.  For the first test I wanted to see the merge results.


{{Frame3|Image:HDRTest-1.jpg|Underexposed|Image:HDRTest-2.jpg|Original|Image:HDRTest-3.jpg|Overexposed}}
{{Frame3|Image:HDRTest-1.jpg|Underexposed|Image:HDRTest-2.jpg|Original|Image:HDRTest-3.jpg|Overexposed}}


The results were rich in color.  I shifted between 2 exposure spaces and the latter of the two was the richest.
* The results were rich in color.  I shifted between 2 exposure spaces and the latter of the two was the richest.
* Having seen the combined difference, I'll work on learning on the Powershot S3 how to manipulate the over/under exposure and see what a true light picture results with.


{{Frame2|Image:HDRTest-2Spaces.jpg|Combined - 2 Stops|Image:HDRTest-4Spaces.jpg|Combined - 4 Stops}}
{{Frame2|Image:HDRTest-2Spaces.jpg|Combined - 2 Stops|Image:HDRTest-4Spaces.jpg|Combined - 4 Stops}}


Having seen the combined difference, I'll work on learning on the Powershot S3 how to manipulate the over/under exposure and see what a true light picture results with.
[[Category:Weblog-2007-05]]
[[Category:2007-05]]
 
=Flower Pot=
* Flower pot on Porch.  I took this a few hours after the faux test.  Much better
* Pictures one and two are cropped sections of the flower pot.  Note the detail in the HDR version.
* Picture three is the full HDR picture
* Picture four is a combination of all of the exposures (marked) and a grayscale strip to show the differences.
{{Frame4|Image:Hdrtest2 real original.jpg|Original - Cropped|Image:Hdrtest2 real.jpg|HDR Cropped|Image:HDRTest2.jpg|HDR Full|Image:Hdtest2 real ranges.jpg|Exposure Ranges}}
 
=Tower=
 
* 21 pictures ranging in exposures
* Noted that there is a need to drop overly exposed pictures (95% white) from the batch
 
{{Frame2|Image:Hdtest_tower_orig.jpg|Original|Image:Hdtest_tower_notones.jpg|HDR}}
 
=River=
* 17 pictures ranging in exposures
{{Frame2|Image:Hdrtest-river-original.jpg|Original|Image:Hdrtest-river-notones.jpg|HDR}}
 
=Dining Room Light=
{{Frame2|Image:Light HDR.jpg|qtpfsgui|Image:Light2Test HDR.jpg|qtpfsgui}}
 
Tests usings Automatic Exposure Bracketing (AEB) on the [[Powershot S3]] with -2/0/+2 exposure range.  Subject is my dining room light.  Tone mapping done via qtpfsgui with the following settings for the first image:
 
<pre>
TMOSETTINGSVERSION=0.2
TMO=Fattal02
ALPHA=1.048
BETA=0.856
COLOR=1.33
PREGAMMA=1.485
</pre>
<pre>
TMOSETTINGSVERSION=0.2
TMO=Fattal02
ALPHA=0.1
BETA=0.8
COLOR=1
PREGAMMA=1</pre>
 
=The Float=
 
''See also "[[The Float]]"''
 
==More pictures==
*[http://www.flickr.com/photos/rabbibob/sets/72157603836582146/ Flickr] - My Flickr 'HDR' set
 
=Programs=
* [http://www.hdrshop.com/ HDR Shop] - V1 is free for non-commercial
* [http://www.hdrsoft.com/ Photomatix] - The older version is free (no tone tools)
** Apparently no alignment options
* Photoshop C2 or higher
* [http://qtpfsgui.sourceforge.net/ qtpfsgui]
* [http://www.supportingcomputers.net/Applications/Products.htm Artizen] - Save to .hdr for use with other programs (no branding)
* [http://www.hdrlabs.com/picturenaut/ PictureNaut]


=References=
=References=
Line 20: Line 75:
*[http://www.cybergrain.com/tech/hdr/ The Future of Digital Imaging - High Dynamic Range Photography] - John Meyer
*[http://www.cybergrain.com/tech/hdr/ The Future of Digital Imaging - High Dynamic Range Photography] - John Meyer
*[http://range.wordpress.com/2006/07/15/modern-hdr-photography-a-how-to-or-saturday-morning-relaxation/ Modern HDR photography, a how-to or Saturday morning relaxation]
*[http://range.wordpress.com/2006/07/15/modern-hdr-photography-a-how-to-or-saturday-morning-relaxation/ Modern HDR photography, a how-to or Saturday morning relaxation]
*[http://tutorialblog.org/hdr-tutorials-roundup/ HDR Tutorials Roundup] - Digg.com
*[http://www.vanilladays.com/hdr-guide/ HDR Tutorial: How to create ‘High Dynamic Range’ images using Photomatix]
*[http://www.hdrlabs.com/tools/links.html HDR Labs] Software Links
*[http://beforethecoffee.wordpress.com/bracketing-number-of-images/ Bracketing] Bracketing Number of Images


[[Category:Photoshop]]
[[Category:Photoshop]]
[[Category:Photography]]
[[Category:Photography]]
[[Category:Programs]]

Latest revision as of 10:46, 16 July 2009

This is a test jump into HDR photography. Hopefully it develops as I learn more, but it was so interesting I just took a leap at it.

Faux HDR

  • First off, I cheated at this. I took 1 picture (which wasn't really a great picture to begin with) and manually manipulated the colors to over & under expose. For the first test I wanted to see the merge results.
Underexposed
Original
Overexposed


  • The results were rich in color. I shifted between 2 exposure spaces and the latter of the two was the richest.
  • Having seen the combined difference, I'll work on learning on the Powershot S3 how to manipulate the over/under exposure and see what a true light picture results with.
Combined - 2 Stops
Combined - 4 Stops

Flower Pot

  • Flower pot on Porch. I took this a few hours after the faux test. Much better
  • Pictures one and two are cropped sections of the flower pot. Note the detail in the HDR version.
  • Picture three is the full HDR picture
  • Picture four is a combination of all of the exposures (marked) and a grayscale strip to show the differences.
Original - Cropped
HDR Cropped
HDR Full
Exposure Ranges


Tower

  • 21 pictures ranging in exposures
  • Noted that there is a need to drop overly exposed pictures (95% white) from the batch
Original
HDR


River

  • 17 pictures ranging in exposures
File:Hdrtest-river-original.jpg
HDR


Dining Room Light

qtpfsgui
qtpfsgui


Tests usings Automatic Exposure Bracketing (AEB) on the Powershot S3 with -2/0/+2 exposure range. Subject is my dining room light. Tone mapping done via qtpfsgui with the following settings for the first image: 

TMOSETTINGSVERSION=0.2
TMO=Fattal02
ALPHA=1.048
BETA=0.856
COLOR=1.33
PREGAMMA=1.485

TMOSETTINGSVERSION=0.2
TMO=Fattal02
ALPHA=0.1
BETA=0.8
COLOR=1
PREGAMMA=1

The Float

See also "The Float"

More pictures

Programs

  • HDR Shop - V1 is free for non-commercial
  • Photomatix - The older version is free (no tone tools)
    • Apparently no alignment options
  • Photoshop C2 or higher
  • qtpfsgui
  • Artizen - Save to .hdr for use with other programs (no branding)
  • PictureNaut

References

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