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HDR Photography: Difference between revisions

From Mike Beane's Blog

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[[Category:2007-05]]
[[Category:2007-05]]


=Real Test 1: Flower Pot=
=Flower Pot=
* Flower pot on Porch.  I took this a few hours after the faux test.  Much better
* 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.
* Pictures one and two are cropped sections of the flower pot.  Note the detail in the HDR version.
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{{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}}
{{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}}


=Real Test 2: Tower=
=Tower=


* 21 pictures ranging in exposures
* 21 pictures ranging in exposures
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{{Frame2|Image:Hdtest_tower_orig.jpg|Original|Image:Hdtest_tower_notones.jpg|HDR}}
{{Frame2|Image:Hdtest_tower_orig.jpg|Original|Image:Hdtest_tower_notones.jpg|HDR}}


=Test 3: Dining Room Light=
=River=
* 17 pictures ranging in exposures
{{Frame2|Image:Hdrtest-river-original.jpg|Original|Image:Hdrtest-river-notones.jpg|HDR}}


[[Image:Light2Test HDR.jpg]]
=Dining Room Light=
{{Frame2|Image:Light HDR.jpg|qtpfsgui|Image:Light2Test HDR.jpg|qtpfsgui}}


=Real Test 3: River=
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:
* 17 pictures ranging in exposures
{{Frame2|Image:Hdrtest-river-original.jpg|Original|Image:Hdrtest-river-notones.jpg|HDR}}


<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>
=Programs=
=Programs=
* [http://www.hdrshop.com/ HDR Shop] - V1 is free for non-commercial
* [http://www.hdrshop.com/ HDR Shop] - V1 is free for non-commercial

Revision as of 01:04, 18 May 2007

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

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)

References