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Digital Camera Overview

Digital Camera Overview. IT 130 Web Graphics and Multimedia. Digital Camera Overview. Images are recorded on CCD (Charged Coupled Device) ; not film Light collected by CCD converted to data Data stored on camera’s memory card. Digital Camera Overview. Image preview capabilities

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Digital Camera Overview

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  1. Digital Camera Overview IT 130 Web Graphics and Multimedia

  2. Digital Camera Overview • Images are recorded on CCD (Charged Coupled Device) ; not film • Light collected by CCD converted to data • Data stored on camera’s memory card

  3. Digital Camera Overview • Image preview capabilities • Image downloaded to a computer

  4. Digital Camera Advantages • Reusable • Instant preview of image • After download, image may be edited

  5. Digital Camera Advantages • Image sent via e-mail or posted to websites without compromising quality • Reduced film and development costs

  6. Digital Camera Overview

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

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

  9. Image Compression

  10. Image Compression Low compression File Size 68KB

  11. Image Compression High compression File Size 11KB

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

  13. Image Resolution • Quality and file size also affected • Directly related # of pixels on CCD • More pixels, higher the resolution

  14. Image Resolution

  15. Image Resolution

  16. Image Resolution

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

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

  19. Pixels • Camera’s CCD is made up of pixels • Each pixel is a tiny light sensor – detects light & color levels

  20. Pixels Example: 12 x 12 resolution = 144 pixels Low resolution = limited detail

  21. Camera-Computer Transfer • Serial port or USB port • Serial port uncommon and slow • USB faster, but newer technology

  22. 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

  23. Camera-Computer Transfer

  24. Storing, Viewing & Printing • Storage requirements often neglected • Hard drive failures • CD burner possible alternative

  25. Storing, Viewing & Printing • Photo Album Software • Digital Photo Frame - Ceiva

  26. Storing, Viewing & Printing • Online – shutterfly.com • TV – low quality

  27. Storing, Viewing & Printing • Printing – Shutterfly.com and Ofoto.com • Personal printer

  28. 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

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

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