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Using Digital Media in Research and Teaching: Standards, Techniques and Strategies Claire Stewart Northwestern University Library
Two problems ,[object Object],[object Object],[object Object]
Problem 1: Teaching with pictures ,[object Object],[object Object],[object Object]
Locate images
Acquire images When is it appropriate to use a digital camera? When is a scanner a better choice?
Image resolution ,[object Object],[object Object],[object Object]
2’ high detail at 600 pixels high for PowerPoint 1. A 1.5” high 35mm slide of entire 50’ high wall 2. Scan at  10000 dpi  to achieve an image 15,000 pixels high 3. Trim to 600 pixels high 1. A 5” high print of 2’ high detail 2. Scan at  120 dpi  to achieve an image 600 pixels high OR
Typical cost, max resolution and file formats JPEG only 3 megapixels (2048 x 1536) $149 Canon PowerShot A410 Compact RAW, JPEG 10 megapixels (3888 x 2592) $1,000 Canon EOS 400D SLR RAW, JPEG 10 megapixels (3872 x 1972) $1,000 Nikon D80 Single Lens Reflex (SLR) PDF, JPEG, TIFF,TXT, HTML, etc. 3600 dpi (30,600 x 39,600)  1.2 gigapixels $100 HP ScanJet 4370 8.5” x 11” flatbed scanner TIFF, JPEG, PICT, BMP, etc. 2400 dpi (26,400 x 40,800)  1 gigapixel $2,300 Epson 10000XL 11” x 17” flatbed scanner TIFF, JPEG, PICT, BMP, etc. 4000 dpi (4,000 x 6,000)  24 megapixels $1,000 Nikon SuperCoolscan 5000 35mm slide scanner
Camera vs Scanner Better resolution, but oversize originals may pose challenges If text or lines are small, resolution may not be sufficient Oversize maps Even illumination, higher resolution capture If text is small, resolution may not be sufficient Printed documents Scan from a slide or print for better resolution, but color fidelity may be an issue Grab a snapshot passing through, or make arrangements with curator Art hanging in a museum N/A On the spot capture Group excursion or live performance  Scanner Camera
Use a screen capture utility! ,[object Object],[object Object],[object Object]
Adjust and enhance Photoshop,Photoshop Elements, iPhoto, Microsoft PhotoEditor for touchup, resize and file conversion Change title, description, add notes and other metadata in Photoshop, Windows Explorer, iPhoto, etc.
Integrate PowerPoint: quick and dirty slideshows with media ARTstor Offline Image viewer: zooming, multiple image display Flickr, exported web photo albums from iPhoto
PowerPoint defaults to sizing images roughly according to their print size. These two images are  identical  in overall pixel dimension, but the above image is set to print at 1” by 1.6”, while the one on the right is set to print at 4” by 6” Pay attention to overall pixel size, and override PowerPoint’s default sizing behavior   PowerPoint tip
Problem 2: Creating and managing interview audio and document scans  ,[object Object],[object Object],[object Object]
Audio hardware Handheld/portable audio recorders $50 - $300 May be platform- or file-format specific (DSS file format less universal than WAV, MP3) Look for USB connections or Compact Flash Standalone studio microphones and digital recorders Better sound quality, more expensive More complex interfaces
Gathering document facsimiles Poor lighting, handheld digital camera Better lighting, camera on tripod with extender arm Image courtesy Heather Schoenfeld Image courtesy Christopher Hayden
Gathering document facsimiles Extender arm for tripod: essential if using a digital camera Pen scanner: an emerging pocket-sized device
Create a workflow Go slowly enough that you can make sure your data is safe Back it up!
Post-processing your data Image to text: Optical Character Recognition (OCR) software (OmniPage) Audio to text: iListen, viaVoice, Audio transcription software (Transcriber)
Find a tool to manage data Shown: iView Media Pro
… and a bit about file sizes and quality ,[object Object],[object Object]
5.6 megabytes per minute of video at a data rate of 750 kilobits per second. Digital video file format with variable compression. Good for network delivery. MPEG4 187 megabytes per minute of video at a data rate of 25 megabits per second. Digital video file format with variable data rate. Usually for editing, not good for network delivery.Typically the file format used by iMovie, FinalCut, and other digital video editing software. DV 960 kilobytes per minute of audio at a data rate of 128 kilobits per second.  Audio file format, usually highly compressed. Good for network delivery. MP3 10 megabytes per minute of audio at CD quality (44 kHz, 16-bit) Audio file format with optional compression. Good for long-term archiving. WAV File sizes will vary depending on amount of compression; 50 - 300 kilobytes typical for web delivery Image file format with variable compression. Good for web delivery and screen presentation. Can be displayed by all web browsers. JPEG 8.5 x 11 scan, 150 dpi, 24-bit color: 6 megabytes Image file format with optional compression. Good for printing and long-term archiving. TIFF
Contact me any time ,[object Object],[object Object],[object Object],[object Object],[object Object]

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Using digital media in research and teaching: standards, techniques and strategies

  • 1. Using Digital Media in Research and Teaching: Standards, Techniques and Strategies Claire Stewart Northwestern University Library
  • 2.
  • 3.
  • 5. Acquire images When is it appropriate to use a digital camera? When is a scanner a better choice?
  • 6.
  • 7. 2’ high detail at 600 pixels high for PowerPoint 1. A 1.5” high 35mm slide of entire 50’ high wall 2. Scan at 10000 dpi to achieve an image 15,000 pixels high 3. Trim to 600 pixels high 1. A 5” high print of 2’ high detail 2. Scan at 120 dpi to achieve an image 600 pixels high OR
  • 8. Typical cost, max resolution and file formats JPEG only 3 megapixels (2048 x 1536) $149 Canon PowerShot A410 Compact RAW, JPEG 10 megapixels (3888 x 2592) $1,000 Canon EOS 400D SLR RAW, JPEG 10 megapixels (3872 x 1972) $1,000 Nikon D80 Single Lens Reflex (SLR) PDF, JPEG, TIFF,TXT, HTML, etc. 3600 dpi (30,600 x 39,600) 1.2 gigapixels $100 HP ScanJet 4370 8.5” x 11” flatbed scanner TIFF, JPEG, PICT, BMP, etc. 2400 dpi (26,400 x 40,800) 1 gigapixel $2,300 Epson 10000XL 11” x 17” flatbed scanner TIFF, JPEG, PICT, BMP, etc. 4000 dpi (4,000 x 6,000) 24 megapixels $1,000 Nikon SuperCoolscan 5000 35mm slide scanner
  • 9. Camera vs Scanner Better resolution, but oversize originals may pose challenges If text or lines are small, resolution may not be sufficient Oversize maps Even illumination, higher resolution capture If text is small, resolution may not be sufficient Printed documents Scan from a slide or print for better resolution, but color fidelity may be an issue Grab a snapshot passing through, or make arrangements with curator Art hanging in a museum N/A On the spot capture Group excursion or live performance Scanner Camera
  • 10.
  • 11. Adjust and enhance Photoshop,Photoshop Elements, iPhoto, Microsoft PhotoEditor for touchup, resize and file conversion Change title, description, add notes and other metadata in Photoshop, Windows Explorer, iPhoto, etc.
  • 12. Integrate PowerPoint: quick and dirty slideshows with media ARTstor Offline Image viewer: zooming, multiple image display Flickr, exported web photo albums from iPhoto
  • 13. PowerPoint defaults to sizing images roughly according to their print size. These two images are identical in overall pixel dimension, but the above image is set to print at 1” by 1.6”, while the one on the right is set to print at 4” by 6” Pay attention to overall pixel size, and override PowerPoint’s default sizing behavior PowerPoint tip
  • 14.
  • 15. Audio hardware Handheld/portable audio recorders $50 - $300 May be platform- or file-format specific (DSS file format less universal than WAV, MP3) Look for USB connections or Compact Flash Standalone studio microphones and digital recorders Better sound quality, more expensive More complex interfaces
  • 16. Gathering document facsimiles Poor lighting, handheld digital camera Better lighting, camera on tripod with extender arm Image courtesy Heather Schoenfeld Image courtesy Christopher Hayden
  • 17. Gathering document facsimiles Extender arm for tripod: essential if using a digital camera Pen scanner: an emerging pocket-sized device
  • 18. Create a workflow Go slowly enough that you can make sure your data is safe Back it up!
  • 19. Post-processing your data Image to text: Optical Character Recognition (OCR) software (OmniPage) Audio to text: iListen, viaVoice, Audio transcription software (Transcriber)
  • 20. Find a tool to manage data Shown: iView Media Pro
  • 21.
  • 22. 5.6 megabytes per minute of video at a data rate of 750 kilobits per second. Digital video file format with variable compression. Good for network delivery. MPEG4 187 megabytes per minute of video at a data rate of 25 megabits per second. Digital video file format with variable data rate. Usually for editing, not good for network delivery.Typically the file format used by iMovie, FinalCut, and other digital video editing software. DV 960 kilobytes per minute of audio at a data rate of 128 kilobits per second. Audio file format, usually highly compressed. Good for network delivery. MP3 10 megabytes per minute of audio at CD quality (44 kHz, 16-bit) Audio file format with optional compression. Good for long-term archiving. WAV File sizes will vary depending on amount of compression; 50 - 300 kilobytes typical for web delivery Image file format with variable compression. Good for web delivery and screen presentation. Can be displayed by all web browsers. JPEG 8.5 x 11 scan, 150 dpi, 24-bit color: 6 megabytes Image file format with optional compression. Good for printing and long-term archiving. TIFF
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