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Digital Imaging, Photography, Videography

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Digital Imaging, Photography, Videography

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  1. Digital Imaging, Photography, Videography

  2. Photography • Writing with light

  3. Photography - What is it? • What are some of the things it is used for? • Visual Communication • Many different things to different people • Hobby, Avocation, Vocation, Work

  4. Photography - History • 1839 -160 years of photography • Unique ability of silver to react to light energy • William Henry Fox Talbot • Daguerre • Eastman - Kodak

  5. Subtractive Primaries

  6. What is light? • Electromagnetic spectrum • 400-700 nm • Ultraviolet to Infrared • UV shorter than 400 nm • IR longer than 700 nm • Films & CCDs(sensors) can record extended range

  7. Photography - What is it? • Traditional Process • Light reacts with silver halide • Creates latent image(invisible) • Chemical process develops image • produce negative or positive • Print made from negative • Photographic process repeated

  8. Photography - What is it? • Digital Process • Light reacts with light sensor • CCD, CMOS • Image stored in memory • Image in memory downloaded or viewed directly • Print made from digital file

  9. Photographs are converted to bitmapsorCaptured as bitmapsMovies are captured as a series of bitmapsEach frame = bitmap

  10. Digital Images • Pixels - Picture Element • Pixels per inch

  11. Computer Graphics • File Types • Bitmap • Vector

  12. Bitmaps • bmp • jpeg • tiff • gif • Pict(combo) • Proprietary

  13. Digital Images • Dots per inch • Lines per inch • Halftones • Lines per mm • http://www.ahip.getty.edu/intro_imaging/05-Res.html

  14. Vector • EPS(?) • AI • Pict • CGM • WMF

  15. Scanners • Drum • Flatbed • Film

  16. Scanners • Optical resolution • Interpolated resolution

  17. Scanning Software • Photoshop plugin • Photo Deluxe • Wang Imaging • ETC.

  18. Scanning • How much information do you need? • Line Art(One Bit - B&W) • Output resolution • Grayscale(254 shades of grey w/B&W) • No more than 1.5 final LPI • Color • Same as grey scale • Unless outputting to highresolution film recorder • LPI is NOT DPI

  19. Storing Digital Images • Magnetic • Optical • Archival

  20. Storage • Photo CD • Five Resolutions up to 8X10 • $2.00 per image • 100 pictures per CD • Picture CD • 1024X768 = 4X6 inch print • Picture Disk • 640X480 = Computer display

  21. Resolution • http://matsone.csuhayward.edu/tms/imaging/dpidemo.htm

  22. Storage Size • More bits • more information • Bigger size • more space

  23. Compression • Lossless for still pictures • LZW • Lossy • JPEG • MPEG • MPEG2 audio layer 3 • MP3

  24. Digital Cameras • CCD • CMOS

  25. Digital Cameras • Resolution • Screen 640X480 • Megapixel 1000x1000 • 3.3 M approx $800 • Good quality 8X10

  26. Digital Cameras • $300 -1500 • Kodak, Apple, Ricoh, Epson, Olympus • $3000-20,000 • Nikon, Fuji, Canon • Digital Back

  27. Digital Cameras • Image Storage in camera • SCSI HD • Floppy Disk • Built-in RAM • Smart Media • Memory Stick(SONY)

  28. Digital Cameras • Image Transfer • Serial • SCSI • Parallel • USB • Firewire-IEE 1394 • PCMCIA Card Reader

  29. Digital Cameras • Number of Photos • Resolution of Photos

  30. Digital Cameras • Exposure Controls • Lens • Quality • Zoom • Digital Zoom/Optical Zoom

  31. Digital Cameras • Digital Video • Sony DVX 1000(Mini DV) • Canon Optura(Mini DV) • Sony Digital 8MM(D8)

  32. Digital Cameras • Digital Video • Storage tape • CD-R • DVD-R • Digital information

  33. Analog Capture • Video card • Regular VCR(NTSC video) • DAC(digital to analog conversion)

  34. Digital Stream Capture • Firewire • All ready digital • No loss in DAC

  35. Capture Software • Premiere • Video Studio • iMovie • Final Cut Pro • ETC.

  36. Digital Cameras • Video Storage • SCSI HD • IDE HD • CD-R • DVD-R • 1-20 MB per second

  37. Digital Images • Input • Processing • Output

  38. Using Digital Images • Publication • Presentation • Electronic Publication • Email • Traditional Output

  39. Advanced Uses • Electronic Delivery • QTVR • Streaming

  40. Playtime • Olympus 3030 • Still • Movie • Smart Media