![]() ![]() For example, recent versions of Photoshop can save such information in various file formats, such as a Photoshop Document (PSD), Encapsulated PostScript File (EPSF) or Desktop Colour Separation (DCS) file. Some modern bitmap applications also accommodate vector data. ![]() You must also have a PostScript printer or a raster image processor (RIP) program to print the PostScript documents. These are often slower than other programs, since the OS must convert the PostScript graphics into a form suitable for the screen. Professional vector applications, such as Illustrator (Adobe) are based on PostScript.A vector image can be used with any printer or other device, whatever its resolution.It employs mathematical descriptions, also known as object-orientated descriptions or vectors, to create each of the several objects within an image. This kind of software is sometimes called a drawing application, since it provides tools similar to those found in a technical drawing office. For example, a 100 KB vector image file occupies 10 MB when converted to a bitmap. High-resolution bitmaps require much more RAM and disk space than vector graphics. ![]() Numerous bitmap applications are available, although Photoshop (Adobe) is the most popular.Adjusting the size of such an image can cause distortion or colour changes. A bitmap image is best sent to a printer or other device that has the same resolution and depth as the image itself.Some programs, known as painting applications, can create such tones using artistic tools such as brushes and liquid effects. This kind of program is ideal for working with material that contains continuous tones, as generated by a camera or scanner. If you can’t do this, be prepared to face sluggish operation or even a computer crash.Ī bitmap application, by definition, creates a bitmap image of a specified size, resolution and colour depth. For example, for a 10 MB document, the application should have 30 MB of RAM. ![]() The RAM assigned to a Classic Mac OS graphics program should be more than three times the size of the file.
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