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InkErosion
 

 

 

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Description Ink corrosion:iron gall ink has oxidized the cellulose, causing the paper to disintegrate.
The manuscript is exhibited behind glass in a church in Evora, Portugal (next to the Capela dos Ossos). I took the photo through the glass. The manuscript is exhibited there without any comment, as just a curious old object. The light is indirect daylight.
Date May 2007(2007-05)
Source Manuscript from Igreja de Sao Francisco, Evora, Portugal
Author Photo by Ceinturion
Permission
(Reusing this file)
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EXIF data:
File name inkerosion.jpg
Size, Mbytes 0.587951171875
Mime type image/jpeg
Camera manufacturer Canon
Camera model Canon PowerShot A540
Orientation of image 1
Image resolution in width direction 180
Image resolution in height direction 180
Unit of X and Y resolution 2
Exposure time 1/15 sec (0.0666666666667)
F number f / 3.5
Compressed bits per pixel 3
Exif version 0220
Lens focal length 9.817 mm
Date and time original image was generated 2007:05:13 10:43:59
Date and time image was made digital data 2007:05:13 10:43:59
Meaning of each component 
Shutter speed 3.90625
Aperture 3.625
Exposure bias 0
Maximum lens aperture 3.625
Metering mode 5
User comments
Supported Flashpix version 0100
Color space information 1
Exif image width 1600
Exif image length 1200
InteroperabilityOffset 2824
Focal plane X resolution 7111.11111111
Focal plane Y resolution 7100.59171598
Focal plane resolution unit 2
Sensing method 2
Digital zoom ratio 1
Interoperability index R98
Interoperability version 0100
Type of image IMG:PowerShot A540 JPEG
Firmware version Firmware Version 1.00
Image number 1001974
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