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Understanding Different Image Types for Graphics

In the realm of graphics, various image file types are utilized, each with their own strengths and weaknesses. Common formats include GIFs, ideal for web graphics with limited colors; JPEGs, perfect for photos with rich color details; and TIFFs, suited for high-quality print outputs. Other formats like WMF and BMP cater to specific uses, such as Windows clip art. Key vocabulary includes RGB, CMYK, resolution, and compression, which all play vital roles in image quality and usability. Knowing these details helps you choose the best file type for your graphic needs.

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Understanding Different Image Types for Graphics

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  1. Graphics Vocabulary POFI 1100 Brookhaven College

  2. Image Types • Image Types - Graphics programs often produce their own file types, but any image can be saved or exported as a common, widely-usable file types. • There are many different types of graphics files. • Each file type has its own advantages and disadvantages. • Use the file type best suited for your application.

  3. Image Types • GIF - Graphics Interchange Format (file extension “.gif”). A type of digital image used on the web for logos, drawings, and images that require transparent edges. GIF images can have a maximum of 256 colors, so they don’t work well for photos • JPEG - Joint Photographic Experts Group (file extension “.jpg”). A type of image used on the web for photos or logos with several gradations of color. JPEG images can have a maximum of 16.7 million colors. • JPEG (.jpg) files are the most common type for photography use.

  4. Image Types • TIFF - Tagged Image File Format (file extension “.tif”). A type of image often used for print output. TIFF images have larger file sizes that GIF or JPEG images. • WMF - Windows Meta File (file extension “.wmf”). A type of image used for Windows clip art. WMF files are vector images and can be resized without losing quality. • BMP - Bitmap (file extension “.bmp”). A type of image commonly used for clipart.

  5. Graphics Vocabulary • CMYK - Cyan, Magenta, Yellow, Black. Colors used for printed output. • RGB - Red, Green, Blue. Colors used for scanners, digital cameras, and on-screen display, such as the Web. • Grayscale - Commonly referred to as “black and white.” An output option for images in only shades of gray. • Color Depth - The number of colors in an image, ranging from 2 to 16.7 million. The more colors in an image, the larger its file size. • Compression - Shrinking the size of an image file by lowering the resolution or decreasing the color depth. • Pixel - An individual dot of color in a digital image. Each pixel’s color and characteristics are stored as digital code.

  6. Graphics Vocabulary • Resolution - The number of dots-per-inch(dpi) of an image. A higher dpi produces a clearer image. On-screen display is 72 dpi, while a standard printing resolution is 300 dpi. High end printers and scanners use up to 2400 dpi. • DPI - Dots-per-inch. See resolution. • Raster Graphic - A type of graphic composed of colored dots, or pixels. The fewer dots-per-inch, the smaller the file size of the graphic, but the less clear the image will be. Raster graphics cannot be dramatically resized without image degradation. • Vector Graphic - A type of graphic composed of points plotted mathematically on a grid. Many clip art files are vector graphics. Vector images can be resized without image degradation. Many clip art files are vector graphics.

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