File:Alvan_Clark_4_Inch_Refractor_Engraving.jpg
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Summary
DescriptionAlvan Clark 4 Inch Refractor Engraving.jpg |
English: This engraving, found on the back of an Alvan Clark 4 inch refractor, gives the date of manufacture (1882) and factory location in Cambridgeport, Massachusetts. Taken with permission at Rockford University. |
Date | |
Source | Own work |
Author | Blablabliam |
Licensing
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some value
1 April 2021
0.08333333333333333333 second
2.4
4.3 millimetre
250
image/jpeg
6054e16c90e4704f8168a2ed559875801f26eade
3,114,275 byte
4,032 pixel
3,024 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:57, 21 January 2022 | 3,024 × 4,032 (2.97 MB) | Blablabliam | Uploaded own work with UploadWizard |
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Metadata
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Camera model | SM-G960U |
Exposure time | 1/12 sec (0.083333333333333) |
F-number | f/2.4 |
ISO speed rating | 250 |
Date and time of data generation | 17:14, 1 April 2021 |
Lens focal length | 4.3 mm |
Width | 4,032 px |
Height | 3,024 px |
Orientation | Rotated 90° CCW |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | G960USQU9FUB5 |
File change date and time | 17:14, 1 April 2021 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 17:14, 1 April 2021 |
Meaning of each component |
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APEX aperture | 2.52 |
APEX brightness | −0.68 |
Exposure bias | 0 |
Maximum land aperture | 1.16 APEX (f/1.49) |
Metering mode | Center weighted average |
Flash | Flash did not fire |
DateTime subseconds | 835091 |
DateTimeOriginal subseconds | 835091 |
DateTimeDigitized subseconds | 835091 |
Supported Flashpix version | 1 |
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Sensing method | Undefined |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 26 mm |
Scene capture type | Standard |
Unique image ID | H12QSKF00SM H12QSKL01VA |