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Digital Cameras: Saving Digital Photos

Digital Cameras: Saving Digital Photos. Why To Save & How To Save Correctly. By Robert J. Courtemanche, CJE rcourtemanche@galenaparkisd.com Galena Park HS, Texas Permission for use granted for any classroom teacher in a public or not-for profit / non-profit school system.

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Digital Cameras: Saving Digital Photos

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  1. Digital Cameras: Saving Digital Photos Why To Save & How To Save Correctly By Robert J. Courtemanche, CJE rcourtemanche@galenaparkisd.com Galena Park HS, Texas Permission for use granted for any classroom teacher in a public or not-for profit / non-profit school system.

  2. The Importance of Saving • There are two kinds of computer users - those who have lost digital photos and those who will…

  3. Save Your Photos Right! • There are many wrong ways to save photos… • To save them correctly you must have the correct: • File Type • Image Mode • dpi / ppi

  4. Save As…File Type • There are several common file types used in photography, printing, video and on the internet such as: .gif, .jpg, .tif, .png

  5. Save As…File Type • TIF - Tagged Image File format is a lossless compression format developed by Adobe for photos. It is one of the main standards in the printing business.

  6. Save As…File Type • JPG - File type created by the Joint Photo Experts Group. It is a lossy compression style, but it is the least lossy and is standard on most cameras.

  7. Save As…File Type • GIF - Graphics Interchange Format. This is an 8-bit file format created by Compuserve specifically for small images to be used on the Internet. I also allows for animated images.

  8. Save As…File Type • PNG - Portable Network Graphics. This is a 24-bit graphic format created by Unisys to replace GIF files on the Internet. It also supports transparency, which GIF does not.

  9. Save As…Image Mode • There are several common file modes used in photography, printing, video and on the internet such as: bitmap, RGB, CMYK, and grayscale

  10. Save As…Image Mode • Bitmap is a very old style of graphics very similar to halftones used in newspapers created with dots

  11. Save As…Image Mode • RGB is a color mode used in photography and on video screens. RGB stands for Red, Green and Blue. It is used to see photographs on a computer or TV screen and on the Internet. All web photos must be in RGB mode.

  12. Save As…Image Mode • RGB is an additive color mode. If you add red to blue you get purple. The concept is that all three light colors add up to create white light.

  13. Save As…Image Mode • CMYK is a color mode using in photography and printing. CMYK stands for Cyan, Magenta, Yellow and Black.

  14. Save As…Image Mode • CMYK is a subtractive method of color because you subtract a percentage of an ink color in order to get a lighter shade.

  15. Save As…Image Mode • Grayscale is more commonly called black and white. This is mainly used in printing for newspapers or magazines instead of color.

  16. Save As…Dots Per Inch • Dots per inch is actually a printing term and in photography it should be expressed as pixels per inch. • Both are somewhat used interchangeably, but there is a difference between square pixels and round dots.

  17. Save As…Dots Per Inch • In general standard TV pixels are round as are the dots created by ink jet and laser printers. • New HDTV pixels are square as are the pixels on computer monitors.

  18. Save As…How many dpi? • In general: • Web: 72 dpi • Newspaper: 200 dpi • Magazines: 300 dpi • The number of dpi is important and is based on the final use of the photo.

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