Image Editing Basics Resolution Screen resolution Printer resolution
Image Editing Basics • Resolution • Screen resolution • Printer resolution
Image Editing Basics • Resizing pictures – Cropping – Scaling – How does this change the size of the picture?
Image Editing Basics • Common functions – – Crop Brightness and Contrast Color Balance (autobalance) Transparency
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
Image file formats • JPEG – stands for Joint Photographic Experts Group –. jpg or. jpeg – Most common photographic file on WWW – “lossy” compression
Image Editing Basics • Common functions – – Crop Brightness and Contrast Color Balance (autobalance) Transparency
Image file formats • JPEG – stands for Joint Photographic Experts Group –. jpg or. jpeg – Most common photographic file on WWW – “lossy” compression
Image file formats • GIF or Compu. Serve 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
Image file formats • TIFF or TIF – – . tif or. tiff “Tagged Image File Format” www. bugmenot. com “Lossless” compression Good file format to choose for print publications – Much larger in size
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
Photo Sharing and Printing • Too numerous to mention all! – – – Flickr Webshots My. Photo. Album Yahoo Photo. Bucket And many others
Photo Sharing and Printing • Free to create albums and let others see • Pay to print photos • NOT SECURE !!!
General Considerations … • For WWW – file sizes kept under 100 -200 K • For print – the larger the resolution the better • For school – no identifying information
Digital Camera Basics … • Lens – digital vs. optical zoom. Can you additional lenses/filters? • Batteries – AAs? Rechargeable batteries? If rechargeable, how? – Look for Li-ion rechargeable if possible
Digital Camera Basics … • Lens – digital vs. optical zoom. Can you additional lenses/filters? • Batteries – AAs? Rechargeable batteries? If rechargeable, how? – Look for Li-ion rechargeable if possible
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), Compact. Flash (CF), Smart. Media (SM), Memory Stick (MS), Multi. Media. Card (MMC) and x. D-Picture Card (x. D).
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 (4 x 6) - 2 megapixel camera is sufficient (for Power. Point, even less will do!). – Poster size prints - 5 megapixel or more – More megapixels does not always mean better pictures!
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