Digital Camera Overview

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Digital Camera Overview

• IT 130
• Web Graphics and Multimedia

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Digital Camera Overview

• Images are recorded on CCD (Charged Coupled
  Device) not film
• Light collected by CCD converted to data
• Data stored on cameras memory card

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Digital Camera Overview

• Image preview capabilities
• Image downloaded to a computer

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Digital Camera Advantages

• Reusable
• Instant preview of image
• After download, image may be edited

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Digital Camera Advantages

• Image sent via e-mail or posted to websites
  without compromising quality
• Reduced film and development costs

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Digital Camera Overview
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Image Compression

• Quality and file size are affected
• Reduces memory required per image
• Uncompressed image 10MB
• Standard card size 8-16 MB

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Image Compression

• Compression levels can be adjusted on the camera
  or after downloaded
• Image cannot be uncompressed
• JPEG most common compression format

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Image Compression
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Image Compression
Low compression
File Size 68KB
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Image Compression
High compression
File Size 11KB
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Image Compression

• Smaller file sizes desired for Internet
• TIFF format better at compression with minimal
  quality effects

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Image Resolution

• Quality and file size also affected
• Directly related of pixels on CCD
• More pixels, higher the resolution

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Image Resolution
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Image Resolution
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Image Resolution
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Pixels

• Smallest piece of info on digital image
• 800 x 600 resolution 480,000 pixels
• 1024 x 768 resolution 786,432 pixels

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Pixels

• Most current cameras 2048 x 1532
• Over 3 million pixels (3 Mega Pixels)

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Pixels

• Cameras CCD is made up of pixels
• Each pixel is a tiny light sensor detects light
  color levels

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Pixels
Example 12 x 12 resolution 144 pixels Low
resolution limited detail
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Camera-Computer Transfer

• Serial port or USB port
• Serial port uncommon and slow
• USB faster, but newer technology

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Camera-Computer Transfer

• Some cameras use a standard 3.5 disk
• Many new digital cameras USB support only
• Another option is memory card with memory card
  reader

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Camera-Computer Transfer
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Storing, Viewing Printing

• Storage requirements often neglected
• Hard drive failures
• CD burner possible alternative

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Storing, Viewing Printing

• Photo Album Software
• Digital Photo Frame - Ceiva

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Storing, Viewing Printing

• Online shutterfly.com
• TV low quality

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Storing, Viewing Printing

• Printing Shutterfly.com and Ofoto.com
• Personal printer

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Storage Media

• Removable memory card
• Smart Media
• Compact Flash (Type I II)
• Stick memory
• 3.5 disk 1.44 MB vs. 8-16 MB memory card
• 128 MB memory cards available

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Resources

• www.dcresource.com
• www.imaging-resource.com
• www.steves-digicams.com
• www.digicamera.com
• www.digital-camerastore.com