Archive for the ‘Digital’ Category

Bitmap or Vector Image…Which Do You Choose?

April 16, 2010

Graphic images – such as photographs, illustrations, drawings, logos, and clip art – are a great addition to any printed piece. When combined with text, images measurably increase reader comprehension, retention, and interest when compared to text only.

In printing and publishing, graphic images are two-dimensional (2D), while on the World Wide Web, images can be two- or three-dimensional (3D) or multimedia.

There are two ways to form graphic images: pixel by pixel in a grid (called a bitmap or raster image) or mathematically from geometric objects such as points, lines, curves, and polygons (called vector images). Digital photographs and all images that have been scanned are bitmap images; vector images originate primarily from illustration or drawing software programs or from plotters used in technical drawing.

Examples of bitmap file formats are Tagged Image File Format (TIF); Joint Photographic Experts Group (JPG or JPEG); Graphics Interchange Format (GIF), Adobe Photoshop (PSD); bitmap (BPM); Windows Paint (PCX); and pixel image format for Macintosh (PICT). Photo editing or image editing software such as Adobe Photoshop, Corel Paint Shop Pro or Microsoft Paint all work on bitmap files.

Examples of vector file formats are Encapsulated Postscript (EPS); Adobe Illustrator (AI); and CorelDRAW (CDR). Popular vector drawing software includes Adobe Illustrator, CorelDRAW, and Macromedia Freehand.

http://macgra.com/0606Printips.pdf

PDF from A to Z

March 5, 2010

In the last few years, portable document technology has created one of those quiet evolutions with significant consequences. You may not realize that when you download and print an interesting article from the Internet or view a soft proof we have sent of your printing project, that portable document technology is at work. You may encounter it several times each day without understanding its current use and potential.

http://macgra.com/0212Printips.pdf

How to Build RIP-Roaring Digital Files

February 23, 2010

February 2002 Printips

Your electronic document – business card, flyer, brochure, newsletter, direct mail post card – is composed of digital images that will be reproduced in print. These images are: text or type (produced by fonts); line art such as drawings or sketches (created in a drawing or paint program or captured with digital scanners); and continuous tones of highlights, shading and shadows (such as photographs).

http://macgra.com/0202Printips.pdf