Digital Images

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Information about Digital Images

Published on August 10, 2010

Author: kiranb


Digital Images Kiran Budhrani

Explore a beautiful media element

Text Images Audio Video Access Select Use (capture)

1. WEB Access Images 2. CAMERA 3. SCANNER

Use For Screen For Print

Selection 4 Factors : CONTENT  What is it ? RESOLUTION   How big ?   How clear ? QUALITY How bright / dark ? FILE FORMAT  What type of file ?


Photos vs. Illustrations  Photos  Real, Evidence  Illustrations / Graphics  Representation, Not real  Illus – typically hand-drawn  Graphics – typically created with the computer



2D Graphic 3D Graphic

3D Graphic


File Formats   .JPEG (joint photographic experts group)  Photos   .PNG (portable network graphic)  High quality web graphics or photos  Supports transparency   .GIF (graphics interchange format)  Low quality web graphics  Supports transparency  Logos

Common Trends Image Resolution Image Quality File Size

Selection 4 Factors : CONTENT  Photo / Illustration RESOLUTION   Image Size QUALITY   Clarity, Brightness FILE FORMAT  File Extension

Selection and Use FOR SCREEN FOR PRINT Content Appropriate Appropriate Resolution Low-High Must be High (file size) (file size) Quality Must be Good Must be Good Format JPG, PNG, GIF JPG, PNG

The more megapixels a camera has, the better the pictures. 12.1 MEGA PIXELS 5 MEGA PIXELS

The more megapixels a camera has, the better the pictures. big fat lie 12.1 MEGA PIXELS 5 MEGA PIXELS

Understanding Megapixels 3  Megapixel  Camera  has  3  Million   %ny  colored  dots  in  a  photo   2,048 (horizontal) x 1,536 (vertical) pixels 3,145,728 pixels

 High MP is only useful if you will usually: 1. Crop photos 2. Print photos that are blown-up  4MP camera – good enough for screen view

  If there are more pixels in an inch.. – higher quality, higher resolution

Compare Cropping Details 10 MP camera 5 MP camera

10 MP 7” 5”

10 MP 7” 5”

10 MP 7” 5”

10 MP 7” 5”

5 MP 7” 5”

5 MP 7” 5”

5 MP 7” 5”

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