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Desktop Publishing Carnegie-Mellon University Spring 2001 Dave Watterson Art Director, GATF wttrsn@aol.com dwatterson@gatf.org
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Welcome to Desktop Jeopardy! 3 teams 2 questions to each team Each question worth 10 points If that team misses you have the opportunity to steal
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1. The basic colors that are used in color process printing are __________ _________ __________ __________
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2. Your monitor uses the _____________ color model
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3. The combination of red, green and blue colors on screen can produce more than _____________ million colors.
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4. The file size of a 72 dpi file that is increased to 144 dpi will be ________ times the size of the original.
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5. For printed material to display natural looking halftones it is recommended that the image dpi is ______ times the line screen used in the printing method.
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6. In QuarkXPress the tool needed to edit elements within a selected text or picture box is the __________ tool.
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File Format Overview
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Raster vs. Vector All computer images come in either Vector or Bitmap formats Each has it’s own advantages and disadvantages
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Raster or Bitmapped Images Image defined pixel by pixel and its resolution is fixed They are called resolution dependent
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Vector/Illustration Images A vector or object-oriented image is a mathematical equation where each object is defined by points connected by paths. They are resolution independent
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Vector-Based Applications Adobe Illustrator Macromedia Freehand CorelDraw These images can be save in a variety of formats so that they can be used and displayed in other in other types of programs
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Resolution Independent They retain their characteristic shapes at different sizes and output resolutions
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File formats to Look For TIFF (.tif) EPS (.eps) DCS (.dcs)
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File Formats for Web GIF (.gif) JPEG (.jpg)
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TIFF files in QuarkXPress Image Control: One-bit (black& White) and grayscale images can be assigned a color in Xpress. A grayscale TIFF can also be edited with contrast and halftone commands in the Style menu
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TIFF files in QuarkXPress File Size and Compression: Typically uncompressed TIFFs are about 20% smaller than EPS files. A TIFF can be saved with non-lossy LZW compression to make their file sizes smaller.
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TIFF files in QuarkXPress Onscreen Display: Xpress generates a low-resolution proxy to preview an imported TIFF. The quality of this preview depends on preset preferences.
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TIFF files in QuarkXPress Cropping: If you crop a TIFF inside Xpress, the printer processes only the viewable data
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TIFF files in QuarkXPress Downsampling: QuarkXPress will downsample all TIFFs to two times the halftone screen frequency
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EPS files in QuarkXPress An EPS file can be a bitmap/raster or an object-oriented/vector graphic depending on which program was used to generate the EPS.
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EPS files in QuarkXPress Image Control: An EPS graphic has already been converted to PostScript Which means that this is a locked file
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EPS files in QuarkXPress File Size and Compression: An EPS file is typically 20% larger than an uncompressed TIFF file
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EPS files in QuarkXPress Onscreen Display: The preview is built into the structure of the PostScript. The speed of the display is dependant upon the preview option chosen when creating the EPS file
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EPS files in QuarkXPress Cropping and Downsampling: Xpress always sends everything to the printer. This can significantly increase the printing time.
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Contacting me I don’t have an office on campus and really work all day Please e-mail me and I will set up a meeting time as quickly as possible
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Thanks for your attention! Now let’s head over to the lab (CFA Room 318)
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