Image Editing Basics

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Image Editing Basics

• Resolution
• Screen resolution
• Printer resolution

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Image Editing Basics

• Resizing pictures
• Cropping
• Scaling
• How does this change the size of the picture?

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Image Editing Basics

• Common functions
• Crop
• Brightness and Contrast
• Color Balance (autobalance)
• Transparency

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Image Editing Basics

• How to do it on the cheap
• MS Office picture toolbar
• crop brightness contrast transparent colors
• MS Paint
• File conversion add text (not much else!)
• GIMP free image editing software
• Scanner or camera purchase
• Look for Adobe Photoshop Elements or Photoshop
  Album with purchase

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Image file formats

• JPEG stands for Joint Photographic Experts
  Group
• .jpg or .jpeg
• Most common photographic file on WWW
• lossy compression

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Image Editing Basics

• Common functions
• Crop
• Brightness and Contrast
• Color Balance (autobalance)
• Transparency

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Image file formats

• JPEG stands for Joint Photographic Experts
  Group
• .jpg or .jpeg
• Most common photographic file on WWW
• lossy compression

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Image file formats

• GIF or CompuServe GIF
• .gif
• Graphics Interchange Format
• Good for small images on WWW
• Has lossless compression, so sharpness is
  retained
• Limited to 256 colors
• Not good for larger photos

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Image file formats

• TIFF or TIF
• .tif or .tiff
• Tagged Image File Format
• Lossless compression
• Good file format to choose for print publications
• Much larger in size

www.bugmenot.com
www.bugmenot.com
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Image file formats

• Bitmap or Windows Bitmap
• .bmp
• Used primarily within Windows as a way to display
  images (screenshots or desktops)
• PICT
• .pict
• Essentially serves the same function as bitmaps,
  but for Apple computers

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Photo Sharing and Printing

• Too numerous to mention all!
• Flickr
• Webshots
• MyPhotoAlbum
• Yahoo
• PhotoBucket
• And many many others

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Photo Sharing and Printing

• Free to create albums and let others see
• Pay to print photos
• NOT SECURE !!!

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General Considerations

• For WWW file sizes kept under 100-200 K
• For print the larger the resolution the better
• For school no identifying information

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Digital Camera Basics

• Lens digital vs. optical zoom. Can you add
  additional lenses/filters?
• Batteries AAs? Rechargeable batteries? If
  rechargeable, how?
• Look for Li-ion rechargeable if possible

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Digital Camera Basics

• Lens digital vs. optical zoom. Can you add
  additional lenses/filters?
• Batteries AAs? Rechargeable batteries? If
  rechargeable, how?
• Look for Li-ion rechargeable if possible

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Digital Camera Basics

• Speed of shot how long does it take from the
  time you press the shutter button for the camera
  to take the picture? How long until you can take
  another picture?
• Storage what type of storage? How much?
• The type of memory card you use is dictated by
  which digital camera you buy. These physically
  different cards are -not- interchangeable.
• Secure Digital (SD), CompactFlash (CF),
  SmartMedia (SM), Memory Stick (MS),
  MultiMediaCard (MMC) and xD-Picture Card (xD).

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Digital Camera Basics

• Image format what types of images will your
  camera take?
• JPEG
• TIFFs
• Image quality what will you be using your
  camera for?
• Small prints (4x6) - 2 megapixel camera is
  sufficient (for PowerPoint, even less will do!).
• Poster size prints - 5 megapixel or more
• More megapixels does not always mean better
  pictures!