preserving your digital...
TRANSCRIPT
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April 24, 2013
Preserving Your Digital Possessions
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The purpose of this presentation is to spread awareness
about how easy it is to preserve and manage your digital
photos and other digital files.
About this presentation
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About this presentation
The purpose of this presentation is to spread awareness
about how easy it is to preserve and manage your digital
photos and other digital files.
We want to inspire you to take action so you can be confident
that your digital stuff will be well preserved and accessible.
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The Problem
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Traditional storage of material valuables
We can ignore paper photos and documents for years
and trust that we can enjoy them anytime.
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Photographs Email
Documents
Audio Video
Websites
21st Century digital valuables are different
Plus:
- social media profiles
- game characters
- network of business
associates that you may
have built up over time on
business networking sites
- …and more artifacts of
your online life.
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Digital photos and other digital files require a special
storage container.
The challenge of preserving your digital files
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Each digital storage medium has vulnerabilities and a
limited lifespan.
There is no 100% safe medium.
The challenge of preserving your digital files
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Each digital storage medium becomes obsolete as technology
Improves. The danger is that your stuff could get trapped on
obsolete media.
Obsolescence
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The risk of loss
It’s easy to lose track of your digital stuff, scattered on CDs,
websites, floppies, thumb drives and buried in your computer.
Photo by the Library of Congress
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Email, social media, cloud storage and other online
services can go out of business or could get hacked.
The risk of loss
Graphics by the Library of Congress
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The risk of loss
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The Solution
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Identify what you want to save
Decide what is most important to save
Organize your collection
Backup copies in different places
Move your collection to a current storage medium once every
five to seven years or replace frequently used storage devices.
Personal Digital Archiving
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Organize
Identify what you want to save. Gather your stuff from:
- Thumb drives
- Social media sites
- CDs
- Floppies
- Video from DVDs
- Email accounts
- Photo sites
- Digitizing
…from everywhere.
Graphics by the Library of Congress
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Organize
Decide what is most important to save
Photos by the Library of Congress
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Organize your collection however you want.
Be consistent with your system.
Organize
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Organize your collection however you want.
Be consistent with your system.
Organize
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Descriptive folder and file names help you and others
find things.
Organize
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Backup
Copy the folder to at least two different types of storage devices.
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Backup
Verify that the files copied over
Spot check your files and open a few -- especially the more
important ones -- to verify that they copied over intact,.
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Save copies in different locations.
Violet Hill house by Grant MacDonald on Flickr
Golden Eye by Kansasphoto on Flickr
Bugatti 1938 Atlantic 57SC (Ralph Lauren) AD by SocialIsBetter on Flickr
Le yacht "Sunrays" (85 m), amarré au port
d'Antibes by Axou on Flickr
Backup
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If you backup to an online storage service – “The Cloud” –
also keep a backup on a nearby storage device.
“Clouds” on Flickr by fifikins.
Backup
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The professional photographer’s 3 - 2 - 1 rule:
Make 3 copies
Backup
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The professional photographer’s 3 - 2 - 1 rule:
Make 3 copies
Save at least 2 onto different types of storage media
Backup
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The professional photographer’s 3 - 2 - 1 rule:
Make 3 copies
Save at least 2 onto different types of storage media
Save 1 in a different location from where you live
Backup
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Manage
Move your collection to a current storage medium once every
five to seven years, well before your current storage device
becomes obsolete.
Upgrade any storage device that you use frequently.
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Manage
When planning your estate, let a loved one know where you
store your important documents. Supply passwords, if needed.
“Last Will and Testament” on Flickr by Ken_Mayer
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Digital Photos
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Digital Photos
“The only shots I can get on a rope line are other shots“ on Flickr by Albumen
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Four things happen immediately when you take a digital photo:
Digital Photos
“You pointing that at me!” on Flickr by Steve 2.0
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Four things happen immediately when you take a digital photo:
Digital Photos
“You pointing that at me!” on Flickr by Steve 2.0
The camera:
1. saves the photo as a file
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Four things happen immediately when you take a digital photo:
Digital Photos
“You pointing that at me!” on Flickr by Steve 2.0
The camera:
1. saves the photo as a file
2. names the file
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Four things happen immediately when you take a digital photo:
Digital Photos
“You pointing that at me!” on Flickr by Steve 2.0
The camera:
1. saves the photo as a file
2. names the file
3. inserts technical information
inside the file
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Four things happen immediately when you take a digital photo:
Digital Photos
“You pointing that at me!” on Flickr by Steve 2.0
The camera:
1. saves the photo as a file
2. names the file
3. inserts technical information
inside the file
4. saves the file in a JPEG
format. (Most consumer
cameras.)
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1. The camera saves the photo as a file. As soon as possible,
get your photo files off your camera and back them up.
Digital Photos
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2. The camera names the file.
Digital Photos
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2. The camera names the file.
If you rename the file with a descriptive name it can help you
identify the photo without displaying it.
Digital Photos
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3. The camera embeds
technical information
within the photo file.
Digital Photos
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3. The camera embeds
technical information
within the photo file.
Some photo editing
software will enable you to
add a description into the
photo file just as you would
write a description on the
back of a paper photo.
Digital Photos
Graphics by the Library of Congress
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Digital Photos
WARNING
With some photo-editing and photo-managing software, after
you enter descriptions to the photo, those descriptions remain
in a database linked to your photos.
They do not get inserted in the photo files themselves.
“Kim in Washington DC, April 2012”
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Digital Photos
WARNING
If you add descriptions to
photo files, uploading your
photos to social media sites
and photo sites -- and as
email attachments -- may
wipe out your descriptions.
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Digital Photos
WARNING
Backup your original photo.
Never discard your photo
just because you have a
copy online.
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4. The camera saves the file in a JPEG format. (Most
consumer cameras.)
Don’t worry about formats unless you have an interest in
working with a special format.
Leave the file as it is and back it up.
Digital Photos
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Modifying Digital Photos
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Digital photos are made up of millions of colored and
shaded dots or squares called pixels.
This image is ten pixels wide.
Pixel density is usually measure by the inch, so if this image
was an inch wide the pixel measurement would be would be
10 dots per inch (DPI) or 10 pixels per inch (PPI).
Digital Photos
DPI and PPI from Wikimedia by Wapcaplet.
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The more dots or pixels per inch, the more dense and sharp
the photo and...
Digital Photos
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…the higher the
quality of the photo.
“Migrant mother” by Dorothea Lange. Courtesy of the Library of Congress.
Digital Photos
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The fewer the dots or pixels per inch…
MORE FEWER
Digital Photos
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…the lower the quality
of the photo.
“Migrant mother” by Dorothea Lange. Courtesy of the Library of Congress.
Digital Photos
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WARNING
When you upload photos to some websites, such as photo-
sharing or social media websites, they may get compressed
to reduce the size of the file.
Digital Photos
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WARNING
A compressed file is easier to upload or attach to an email
because it is much smaller than the original photo file.
Digital Photos
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WARNING
However, compression
reduces the size of the
photo file by deleting
colors from the photo’s
color palette.
Original photo palette
Compressed photo palette
Digital Photos
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WARNING
So compression can lower the quality of the photo by reducing the
number of pixels in the photo’s palette.
Digital Photos
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WARNING
Once a photo is compressed and pixels are removed
you can never regain the original quality.
That’s why you should always safely preserve your originals
and work with copies.
Digital Photos
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Scanning
Digital Photos
“Scanner de Diapositivas” on http://www.arteyfotografia.com.ar by leonidas
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Scan 4"x6” 5”x7” and 8”x 10” photos at 300 dpi/ppi.
300 dpi/ppi
Digital Photos
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Scan slides and tiny photos at about 1800 dpi/ppi.
1800 dpi/ppi
You need more dots/pixels per inch to capture the detail.
Digital Photos
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If you have a choice of file format in which to save the scanned
photo or slide, JPEG is still the common standard.
Some websites will only let you upload JPEGs.
Digital Photos
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Summary
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Identify what you want to save
Decide what is most important to save
Organize your collection
Backup copies in different places
Move your collection to a current storage medium once every
five to seven years or replace frequently used storage devices.
Personal Digital Archiving
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And finally…
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The Public Library:
Your Community’s Information Resource
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The Public Library:
Your Community’s Information Resource
Public libraries play a unique role in their communities
Genealogy, family and local history
Scanning
Center for digital literacy
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publiclibrariesonline.org
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Thank You
For more information, please visit:
http://digitalpreservation.gov/personalarchiving/
Please email me if you have any questions that we don’t get to:
Mike Ashenfelder