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HTC S620 with coin
 

 

 

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Source page: http://commons.wikimedia.org/wiki/File:HTC_S620_with_coin.jpg
Description
?Norsk (bokmål)?: HTC S620.
Date 26 October 2006(2006-10-26), 22:46
Source HTC S620
Author dkl
U.S. quarter

This image has currency in it to indicate scale.

Avoid using objects such as coins for scale, as they will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins are particularly bad as they can reinforce a geographical bias, and some coins' designs are copyrighted.

Ideally, a photograph should include a ruler with the subject (as seen in this photo) or add a scale marking via an image editor instead (as seen in this photo). SI ("metric") units are the most commonly used worldwide (see metre, 1 E-2 m).

Examples of bad practice: here.

A tape measure


Common coin diameters for reference:

  • U.S. dollar:
    • 1¢: 19.05 mm , 0.75 in
    • 5¢: 21.21 mm , 0.79 in
    • 10¢: 17.91 mm , 0.71 in
    • 25¢: 24.26 mm , 0.94 in
    • 50¢: 30.61 mm , 1.22 in
    • $1: 26.5 mm , 1.02 in
  • Canadian dollar:
    • 1¢: 19.05 mm , 0.75 in
    • 5¢: 21.2 mm , 0.83 in
    • 10¢: 18.03 mm , 0.71 in
    • 25¢: 23.88 mm , 0.94 in
    • 50¢: 27.13 mm , 1.07 in
    • $1: 26.5 mm , 1.02 in
    • $2: 28 mm , 1.1 in
  • Pound sterling
    • 1p: 20.32 mm , 0.8 in
    • 2p: 25.91 mm , 1.02 in
    • 5p: 18 mm , 0.71 in
    • 10p: 24.5 mm , 0.96 in
    • 20p: 21.4 mm , 0.84 in
    • 50p: 27.3 mm , 1.07 in
    • £1: 22.5 mm , 0.89 in
    • £2: 28.4 mm , 1.12 in
  • Euro
    • 1c: 16.25 mm , 0.64 in
    • 2c: 18.75 mm , 0.74 in
    • 5c: 21.25 mm , 0.84 in
    • 10c: 19.75 mm , 0.78 in
    • 20c: 22.25 mm , 0.88 in
    • 50c: 24.25 mm , 0.95 in
    • €1: 23.25 mm , 0.92 in
    • €2: 25.75 mm , 1.01 in

Licensing

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).

Checked copyright icon.svg This image was originally posted to Flickr by gadgetdude at http://flickr.com/photos/49503023809@N01/280392580. It was reviewed on 12 October 2007(2007-10-12) by the FlickreviewR robot and confirmed to be licensed under the terms of the cc-by-2.0.


Licensing:
Creative Commons Attribution 2.0 Generic

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EXIF data:
File name htc_s620_with_coin.jpg
Size, bytes 1036178
Mime type image/jpeg
Image input equipment manufacturer Canon
Image input equipment model Canon PowerShot A80
Image resolution in width direction 180/1
Image resolution in height direction 180/1
Unit of X and Y resolution 2
Exposure time 1/60
F number 40/10
Compressed bits per pixel 3/1
Exif version 0220
Lens focal length 519/32
Date and time original image was generated 2006:10:26 22:46:24
Date and time image was made digital data 2006:10:26 22:46:24
Meaning of each component 
Shutter speed 189/32
Aperture 128/32
Exposure bias 0/3
Maximum lens aperture 128/32
Metering mode 5
User comments
Supported Flashpix version 0100
Color space information 1
Exif image width 1704
Exif image length 2272
Focal plane X resolution 2272000/280
Focal plane Y resolution 1704000/210
Focal plane resolution unit 2
Sensing method 2
White balance 1
Digital zoom ratio 2272/2272
Type of image IMG:PowerShot A80 JPEG
Firmware version Firmware Version 1.00
Image number 1525262
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