File:Night radar scope image of Potomac approach to Washington, WWII (39543289985).jpg
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Size of this preview: 785 × 600 pixels. Other resolutions: 314 × 240 pixels | 628 × 480 pixels | 1,005 × 768 pixels | 1,280 × 978 pixels | 2,560 × 1,956 pixels | 3,131 × 2,392 pixels.
Original file (3,131 × 2,392 pixels, file size: 1.64 MB, MIME type: image/jpeg)
File information
Structured data
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Summary
[edit]DescriptionNight radar scope image of Potomac approach to Washington, WWII (39543289985).jpg | Lot-2292-5: WWII-Communications: AC Radar Scope of the Nation’s Capital. Radar scope photograph of the Potomac approach to Washington taken at night from a Flying Fortress by the Army Air Forces. The center of the photograph is approximately over Park Fairfax or Fairlington. Alexandria is at the bottom of the picture and the Key Bridge is at the top right. The photograph was taken with improved equipment, that produces such fine definition that even the runways on National Airport and Bolling Field can be picked out. Scrutiny of the picture will show the Pentagon, the Army War College, the Lincoln and Jefferson Memorials, the Washington Monument, and all the bridges over the Potomac. U.S. Army Signal Corps Photograph: SC-99902. Courtesy of the Library of Congress. (2018/02/23). |
Date |
Unknown date Date and/or time in the file Exif metadata are incorrect/invalid. |
Source | Lot-2292-5 |
Author | National Museum of the U.S. Navy |
Licensing
[edit]This image was originally posted to Flickr by Photograph Curator at https://flickr.com/photos/127906254@N06/39543289985 (archive). It was reviewed on 12 July 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
12 July 2018
Public domainPublic domainfalsefalse |
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:43, 12 July 2018 | 3,131 × 2,392 (1.64 MB) | Hiàn (alt) (talk | contribs) | Transferred from Flickr via #flickr2commons |
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File usage on Commons
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D80 |
Exposure time | 1/80 sec (0.0125) |
F-number | f/4.5 |
ISO speed rating | 1,600 |
Date and time of data generation | 09:20, 2 June 2017 |
Lens focal length | 29 mm |
Width | 3,872 px |
Height | 2,592 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 09:12, 23 February 2018 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 09:20, 2 June 2017 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 6.321928 |
APEX aperture | 4.33985 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 60 |
DateTimeOriginal subseconds | 60 |
DateTimeDigitized subseconds | 60 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 43 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 3073408 |
Lens used | 16.0-35.0 mm f/4.0 |
Date metadata was last modified | 04:12, 23 February 2018 |
Unique ID of original document | E1DFF2A2A4E86DD347520FD4E106C406 |
IIM version | 63,371 |