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Photoshop Tutorial. University of Chicago Computer Science Instructional Laboratory. (MacLab / linux lab). 1 Getting Started. 1.1 File New ...

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Photoshop TutorialPage 1Photoshop TutorialUniversity of Chicago Computer Science Instructional Laboratory(MacLab / linux lab)1 Getting Started1.1 File NewSelect the size of the blank document that you want to create. Pay special attention to yourchoice of resolution. If youre creating an image for the web 72 pixels per inch will suffice.If youre creating a detailed art project you want at least 300 pixels per inch but obviouslythe more the bettter.1.2 A Few Words About ColorComputers recognized many different color formats. Some common choices include:RGB color lists a value between 0 and 255 for each of the Red Green Blue componentsof a color. (0 0 0) the absence of color is completely black. (255 255 255) thepresence of all colors is completely white. Most Photoshop artists work in RGB.CMYK color lists a percentage of each of the colors (Cyan Magenta Yellow blacK).CMYK can best be thought of as the color printer cartridge colors. Some graphicsdesigners choose to convert their work (after it has been done in RGB) to CMYK sothat they have a better sense of how its going to look after it is printed.Grayscale this is exactly what it sounds like. Its a color mode that operates entirely inblack and white. Usually in order to convert an image to grayscale you will first needto flatten it. (More about this later)Bitmap Only allows for black and white dots (pixels); I wouldnt recommend using thisin most casesLab color Represents color with 3 components: (Lightness color value from red togreen color value from blue to yellow). This is another nonstandard color channel.2 Saving Your File2.1 File Save As . . .The default format for Photoshop files is aptly named Photoshop Format. Keeping yourdocument in Photoshop format is a good idea if youre planning to go back and edit it later.However if you want to email it or put it on a website you will want to change the formatto something more universal.1Page 22.2 Popular Format Choices ExplainedPhotoshop PDF PDFs have gotten a b ...

Source: www.maclab.cs.uchicago.edu

 

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