File:Ceramic-salts-damage-efflorescence-white-met-AIC-News.jpg

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Ceramics. Efflorescence caused by direct contact with open-cell polyester polyurethane.

Comments: White amine deposits formed on the lower glazed portion of the jar and the unglazed base where it had been stored with polyurethane foam. The object and foam lining were stored in a cardboard box for a period of 10 years.

Image credit: Photograph by Donna Strahan, © The Metropolitan Museum of Art. AIC, permission received 6/10/2020 from B. Naugle via email to rarenstein.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:57, 21 July 2020		1,024 × 1,530 (206 KB)	Sspringer (talk \| contribs)	Ceramic. short description. Comments: long description. Image credit: citation from Tsukada article, AIC News 2012/01

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Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D200
Exposure time	1/4 sec (0.25)
F Number	f/16
ISO speed rating	100
Date and time of data generation	03:43, 16 December 2009
Lens focal length	23 mm
Width	1,024 px
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Bits per component	8 8 8
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop CS5 Macintosh
File change date and time	07:48, 23 December 2011
White point chromaticity	0.313 0.329
Chromaticities of primarities	0.64 0.33 0.21 0.71 0.15 0.06
Color space transformation matrix coefficients	0.299 0.587 0.114
Y and C positioning	Centered
Exposure Program	Aperture priority
Exif version	2.21
Date and time of digitizing	03:43, 16 December 2009
Meaning of each component	Y Cb Cr does not exist
APEX shutter speed	2
APEX aperture	8
APEX exposure bias	0
Maximum land aperture	3 APEX (f/2.83)
Subject distance	0.6 meters
Metering mode	Center weighted average
Light source	Unknown
Flash	Flash did not fire
DateTime subseconds	57
DateTimeOriginal subseconds	57
DateTimeDigitized subseconds	57
Supported Flashpix version	1
Color space	Uncalibrated
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	Manual white balance
Digital zoom ratio	1
Focal length in 35 mm film	34 mm
Scene capture type	Standard
Scene control	None
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown
GPS tag version	2.2.0.0
Lens used	17.0-55.0 mm f/2.8
Date metadata was last modified	02:48, 23 December 2011
Unique ID of original document	FABC7C18DBB46BFC39AD65C0A5871F1E