相机位置 38° 53′ 21.23″ 北, 77° 03′ 00.28″ 西    在以下服务上查看本图像和附近其他图像： OpenStreetMap 38.889231; -77.050078 描述Lincoln Memorial (south wall interior).jpg 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. עברית: אנדרטת לינקולן, הקיר הדרומי הפנימי. החריטה של נאום גטיסבורג נמצא במרכז התמונה 日期 2006年6月17日, 19:54:44 UTC 来源 By uploader. 作者 Gregory F. Maxwell <[email protected]> PGP:0xB0413BFA 授权 (二次使用本文件) GFDL 1.2 only 其他版本

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

• 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

• 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.

• Image:Lincoln Memorial (north wall interior).jpg
• Image:Lincoln Memorial (Lincoln tall).jpg

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已授权您依据自由软件基金会发行的无固定段落及封面封底文字（Invariant Sections, Front-Cover Texts, and Back-Cover Texts）的GNU自由文件许可协议1.2版的条款，复制、传播和／或修改本文件。该协议的副本请见“GNU Free Documentation License”。

仅1.2版http://www.gnu.org/licenses/old-licenses/fdl-1.2.htmlGFDL 1.2GNU Free Documentation License 1.2truetrue