Introduction to Digital Imaging

1
Introduction to Digital Imaging
2
Part 2 - Scanning
3
Shopping for Scanners

• Optical, not Interpolated Resolution 300- 1200dpi
• Color Depth 24-36 bits
• Image Sensor CMOS vs. CCD
• Scanning Software
• Connection - Serial, Parallel, USB, SCSI ( -
  )
• Optical Density
• commercial 2.8- 3.0
• professional 3.0- 3.4
• Color Management -
• Profiles, Calibration
• Transparency Adapters, Document feeders

4
Types of scanners

• Flatbed, Slide, Drum, handheld, document
• Price ranges
• What you get
• Using Flatbed scanner
• Placing photos

5
Scanner software

• Resolution
• Color depth
• Scaling
• Color correction
• Sharpening

6
Scanning

• Photos
• Line Art
• Screened Art
• Objects
• Text/OCR

7
Part 3 Digital cameras
8
Basic elements

• Lens
• Viewfinder / SLR Optical / Digital Zoom
• Image sensor
• CMOS/ CCD
• Storage medium
• RAM, Floppy, Compact Flash, Smart Media
• Camera features
• Exposure/ Focus Lock, LCD, Burst
  shooting/recovery time
• Connection to PC
• Serial, Parrallel, USB, SCSI
• Downloading options
• To PC, Printer, Video
• Batteries
• Nickel Metal Hydride rechargables

9
Types of Digital Cameras
10
Comparison

• Film
• Lot of camera for the buck
• Film costs
• Processing Costs
• Battery usage low
• Film Ages
• Delay for processing
• Can carry lots of film
• Fast Shooting

• Digital
• Similar camera more expensive
• No film to buy, process
• Higher battery usage
• Can be archived on cdrom
• Instant gratification
• Review and delete
• Storage/ Download challenges
• Slower shooting
• Cost of PC

11
Storage Options

• Internal Memory Only - RAM (Basic models)
• Floppy Disc
• Big and slow, but cheap and unlimited
• Removable memory cards
• Compact Flash- Kodak, Nikon, Canon
• Smart Media - Olympus, Fuji, Agfa (smaller, not
  as high capacity)
• Sony Memory Stick
• Iomega Click drives- often an intermediate
  storage
• Direct Cable connection (Professional Models)
• File formats JPEG or TIF
• Resolution
• 640 x 480, 1024 x 768, 1280 X 960

12
Downloading Options

• Camera to PC Cable
• Serial, USB common, SCSI, Firewire more
  expensive
• Serial 1 minute per megabyte USB 50x faster
• Storage media to PC via
• PC card adapter for laptop 20-80
• Floppy adapter for SmartMedia
• Card reader drive directly attached to PC
• Click drive transfers from card to click disks
• Printer, TV for direct output

13
Shooting Tips

• Limitations
• Fine details ie leaves
• Lighting
• Avoid too high contracts
• Movement
• Not as good at action photography
• Subjects
• Large areas of color work better, recognizable
  objects
• Composition
• Closer Details Fore/Background Rule of Thirds,
  Symmetry
• Use Fill Flash

14
Using Images

• Rotating
• Stitching
• Cropping
• Retouching
• Organizing
• Output for Web, Print

15
Part 4 Working with Images
16
Downloading from the Web

• Right clicking
• Copy and paste
• Clip art sites
• Emailing photos

17
Microsoft Clip Art

• Shared by all MS Office Applications
• Usually in WMF or EMF formats (vector based)
• Scalable, editable
• Others in BMP or GIF format
• Bitmaps- Not editable

18
Stock agencies

• Most are online now
• Royalty free vs. paid art
• unlimited vs. one time use

19
Dover books

• Public domain- royalty free
• Scan and use
• Scan as greyscale or black and white
• Adobe Streamline useful for turning bitmapped
  scans into editable vector art in Illustrator

20
Film to disk processing

• Many film processing services will save your
  photos to a disk
• Usually in JPEG format

21
Kodak Photo CDs

• High quality scans in variety of resolutions
• Good for slides
• More expensive
• Two Quality Levels
• Master includes 5 different Resolutions of each
  35 mm slide.
• Turnaround time 2 days, cost 10 for the disc,
  plus 2 per scan
• Pro includes an additional hi-resolution scan
  Turnaround time 2 days, cost 18 per disc, plus
  20 per scan less if longer wait

22
Basic Image Editing

• Cropping
• Selecting
• Copy/Pasting
• Retouching
• Colorizing
• Filters
• Sharpening
• Special Effects

23
Stitching software

• Has gotten much cheaper, simpler
• Overlap photos by 50
• Keep your distance
• Watch for exposure changes
• Cylindrical vs. Perspective options

24
Special Effects

• Kais Power Goo
• Plug-ins for applications
• Kais Power Tools
• Alien Skin Software