LIS3353 SP12 Week 5a

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LIS3353 SP12 Week 5a

  1. 1. Wikispaces.com &DigitalPhotography/WebImagesLIS 3353 – 2/2/12
  2. 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. 3. News Facebook IPO – what does this mean? http://www.youtube.com/watch?v= 6gmP4nk0EOE
  4. 4. HTML Questions
  5. 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. 6. Digital Photography Pixel – single element, point, dot, that contains color Depending on camera capability, you can capture images with millions of pixels
  7. 7. Digital Photography 32x32px
  8. 8. Digital Photography -Terminology Focal length Aperture ISO Shutter speed sRGB EXIF data/GPS RAW (.CR2/.NEF)
  9. 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. 10. Digital Photography – webimages Things to take into consideration – Standard monitor size changes – to be safe, consider the maximum space youre working with at 1024x768px – Images should be around 100kb, depending on the size of the site youre working with, under 1000px at the widest – why?
  11. 11. Digital Photography – webimages 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. 12. Digital Photography – webimages GIF – Graphics Interchange Format Created by CompuServe in 1987 256 colors max Can also animate in short loops (link) Largely replaced by PNG
  13. 13. Digital Photography – webimages 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. 14. Digital Photography – webimagesTiff – 7.5k PNG 6.5k JPG 4.7k GIF – 4k
  15. 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

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