File:Chalk stick (Radiopaedia 45672).jpg

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Summary:

Radiopaedia case ID: 45672
Image ID: 23038340
Modality: Photo
System: Musculoskeletal
Findings: A traditional piece of chalk for us on a blackboard. It is broken (fracture) in one place due its brittle nature. Photo courtesy of Mr Roger Bickle, Melton Mowbray.
Published: 3rd Jun 2016
Source: https://radiopaedia.org/cases/chalk-stick
Author: Ian Bickle
Permission: http://creativecommons.org/licenses/by-nc-sa/3.0/

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	14:38, 20 March 2021		1,492 × 2,423 (655 KB)	Fæ (talk \| contribs)	Radiopaedia project rID:45672 (batch #7004)

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Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D90
Exposure time	1/640 sec (0.0015625)
F Number	f/1.8
ISO speed rating	200
Date and time of data generation	15:30, 1 June 2016
Lens focal length	50 mm
Orientation	Normal
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Software used	Adobe Photoshop Elements 10.0 Windows
File change date and time	15:38, 2 June 2016
Y and C positioning	Co-sited
Exposure Program	Aperture priority
Exif version	2.21
Date and time of digitizing	15:30, 1 June 2016
Meaning of each component	Y Cb Cr does not exist
Image compression mode	4
APEX exposure bias	0.33333333333333
Maximum land aperture	1.6 APEX (f/1.74)
Metering mode	Pattern
Light source	Unknown
Flash	Flash did not fire
DateTime subseconds	00
DateTimeOriginal subseconds	00
DateTimeDigitized subseconds	00
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	75 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
Supported Flashpix version	1
Image width	1,492 px
Image height	2,423 px
Date metadata was last modified	16:38, 2 June 2016
Unique ID of original document	xmp.did:CDD5FA56CF28E611ACA5E9619E16E10D