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Lincoln Memorial (south wall interior)
 

 

 

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Camera location

38° 53' 21.23" N, 77° 3' 0.28" W

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Description
English: The Lincoln Memorial, south wall interior. The engraving of the Gettysburg Address centered in the image.
Français : Vue intérieure du Lincoln Memorial à Washington DC, aux États-Unis. Le texte du Gettysburg Address gravé au mur est visible au centre de l'image.
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Date 2006-06-17 19:54:44 UTC
Source By uploader.
Author Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA
Permission
(Reusing this file)

GFDL 1.2 only

Other versions

Edited

Lincoln Memorial (south wall interior, person for scale).jpg

The Lincoln Memorial is dramatically lit by a combination of sunlight streaming in the east facing opening which is obstructed, reflected, and scattered by the marble columns and walls and the dim and moody illumination which enters through the marbled ceiling panels.

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Quality image

This image has been assessed using the Quality image guidelines and is considered a Quality image.


Contents

Equipment

  • Camera: Canon 5d.
  • Lens: 50mm f/1.4
  • Shot settings: f/13, ISO 200.

Image processing chain

  • Raw conversion
    • dcraw version v8.21
    • Camera -> sRGB colorspace conversion
    • Clip pixels with any blown channel to white
    • Color balance based on gray card
  • Stitching and scaling (4px : 1px) of the images.
  • Dynamic range compression via tone mapping
  • JPEG compression

Technique

  • Camera located on nodal-point rotation mount.
  • White balance was recorded via a gray card. Because of the mixed lighting and wide FOV the perceived white balance may differ somewhat from the presented white balance away from the center of the image.
  • Twenty seven separate exposures were combined to increase the FOV and dynamic range.
  • A level was used to measure the angle of the walls to aid in alignment and shifting of the image.

At every stage of the process great care was taken to ensure the most accurate representation possible.

The slight geometric distortion at the very top of the image is an inherent limitation of rectilinear projection for wide FOV images. The horizontal FOV of this image is 105 degrees. The optical center of the rectilinear projection is at the bottom lip of the text, dead centered horizontally.

See also


I, the copyright holder of this work, hereby publish it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. 1.2 only


Licensing:
GNU Free Documentation License

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File name lincoln_memorial__south_wall_interior_.jpg
Size, bytes 9680795
Mime type image/jpeg
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