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Wikispaces.com &
Digital
Photography/Web
Images

LIS 3353 – 2/2/12
Administrivia

   Grading
    – Working on Assignment #1
    – Quiz #2 in the grade center
    – Status:
         • Jung is grading A2, A4 and A5A
         • I am working on A1 and A3

   Today’s agenda
    –   Quiz
    –   News
    –   HTML questions
    –   Digital Photography & Web Images
News

   Facebook IPO – what does this
    mean?
   http://www.youtube.com/watch?v=
    6gmP4nk0EOE
HTML Questions
Digital Photography

   1981 – Sony created first consumer digital
    camera – Sony Mavica
   Digital imaging uses an electronic image
    sensor to record image as data vs.
    chemicals on film
   Two types of sensors:
    – CCD – charge coupled device
    – CMOS sensors – complementary metal-oxide
      semiconductor – type of digital circuitry
Digital Photography

   Pixel – single element, point, dot,
    that contains color
   Depending on camera capability,
    you can capture images with
    millions of pixels
Digital Photography


  32x32px
Digital Photography -
Terminology

   Focal length
   Aperture
   ISO
   Shutter speed
   sRGB
   EXIF data/GPS
   RAW (.CR2/.NEF)
Digital Photography -
Terminology
   Flickr.com
    – http://www.flickr.com/photos/caseycasey
      /6071041513/in/photostream
    – http://www.flickr.com/photos
      /63738890@N00/4797299641
    – http://www.flickr.com/photos/caseycasey/68054
   Instagram
   Hipstamatic
Digital Photography – web
images

   Things to take into consideration
    – Standard monitor size changes – to be
      safe, consider the maximum space
      you're working with at 1024x768px
    – Images should be around 100kb,
      depending on the size of the site you're
      working with, under 1000px at the
      widest – why?
Digital Photography – web
images

   JPG or JPEG – standard web image
    file type, lossy compression.
   JPEG – Joint Photographic Experts
    Group (like W3C but for images)
   JPG can embed ICC color profile
    and other metadata (e.g., EXIF)
Digital Photography – web
images

   GIF – Graphics Interchange Format
   Created by CompuServe in 1987
   256 colors max
   Can also animate in short loops (link)
   Largely replaced by PNG
Digital Photography – web
images

   PNG – portable networks graphic –
    JUST for images online, not for print
   Intended to replace GIFs
   Lossless compression (vs JPG)
   Much more flexible color-wise than
    GIFs
Digital Photography – web
images


Tiff – 7.5k
                      PNG 6.5k




  JPG 4.7k            GIF – 4k
Digital Photography –
summary

   For photos online – longest side
    around 7-800px, no bigger than
    1000px wide
   For small web graphics, use PNG
   For animated web graphics, use GIF
   Disable GPS on your phone/camera
    function

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LIS3353 SP12 Week 5a

  • 2. Administrivia  Grading – Working on Assignment #1 – Quiz #2 in the grade center – Status: • Jung is grading A2, A4 and A5A • I am working on A1 and A3  Today’s agenda – Quiz – News – HTML questions – Digital Photography & Web Images
  • 3. News  Facebook IPO – what does this mean?  http://www.youtube.com/watch?v= 6gmP4nk0EOE
  • 5. Digital Photography  1981 – Sony created first consumer digital camera – Sony Mavica  Digital imaging uses an electronic image sensor to record image as data vs. chemicals on film  Two types of sensors: – CCD – charge coupled device – CMOS sensors – complementary metal-oxide semiconductor – type of digital circuitry
  • 6. Digital Photography  Pixel – single element, point, dot, that contains color  Depending on camera capability, you can capture images with millions of pixels
  • 8. Digital Photography - Terminology  Focal length  Aperture  ISO  Shutter speed  sRGB  EXIF data/GPS  RAW (.CR2/.NEF)
  • 9. Digital Photography - Terminology  Flickr.com – http://www.flickr.com/photos/caseycasey /6071041513/in/photostream – http://www.flickr.com/photos /63738890@N00/4797299641 – http://www.flickr.com/photos/caseycasey/68054  Instagram  Hipstamatic
  • 10. Digital Photography – web images  Things to take into consideration – Standard monitor size changes – to be safe, consider the maximum space you're working with at 1024x768px – Images should be around 100kb, depending on the size of the site you're working with, under 1000px at the widest – why?
  • 11. Digital Photography – web images  JPG or JPEG – standard web image file type, lossy compression.  JPEG – Joint Photographic Experts Group (like W3C but for images)  JPG can embed ICC color profile and other metadata (e.g., EXIF)
  • 12. Digital Photography – web images  GIF – Graphics Interchange Format  Created by CompuServe in 1987  256 colors max  Can also animate in short loops (link)  Largely replaced by PNG
  • 13. Digital Photography – web images  PNG – portable networks graphic – JUST for images online, not for print  Intended to replace GIFs  Lossless compression (vs JPG)  Much more flexible color-wise than GIFs
  • 14. Digital Photography – web images Tiff – 7.5k PNG 6.5k JPG 4.7k GIF – 4k
  • 15. Digital Photography – summary  For photos online – longest side around 7-800px, no bigger than 1000px wide  For small web graphics, use PNG  For animated web graphics, use GIF  Disable GPS on your phone/camera function