Tuesday, January 31, 2012

Raster Images and Vector Graphics

                When you look at a computer screen, you see images crisp and clear just as your printed photographs that are tangible objects. What make up these images that we see are pixels.  Vectors are illustrations with unlimited resolution.

                Bitmap, however, like pixels, only contain black and white pixels with no shades of grey.

Cropping and rotating images are just some of the few things we do to enhance our images. Cropping cuts away unnecessary parts we choose in our photos. Almost any transformation, whether resizing or rotating, will require pixel information.

                There are certain files that can print and others that can’t.  RGB color mode for example, shouldn’t be printed; it’s only intended for computer screen use. Switching it to CMYK color mode accounts for better accuracy as that mode is the color of your ink cartridges. As well as GIFs and JPEGs, GIFs are meant for only web because of low resolution. JPEGs are better suited for prints, though not recommended.

                Embedded fonts are very useful when you want to transfer your advertisement to work in other programs or transferring other computers. Outlining texts are similar to embedded fonts. But only highlights a certain text you want, and turns it into a graphic.

                When drawing on programs such as Illustrator, simplify your path, do not litter your graphic with too many points. Cut it down and result with smoother lining and a happier you.

                Popular drawing programs offer a complex list of file types that are called vector file formats. Vector graphics are pixel free and are not subject to scaling restrictions, in other words, unlimited resolution.

                JPEG is a compressed photo format. RAW files however, are subject to minimal or no compression of a photo. They’re very flexible and powerful files even though they take up a lot of memory space.

                Ppi; pixels per inch resolution can vary on the internet. Usually you want your image to be 300 ppi for printing.

                Illustrator, InDesign, and QuarkXPress accept Photoshop native files being brought into their programs. However, there are some settings in Photoshop such as drop shadows that cannot transfer or are not the correct settings in the other programs. This has been a Transparency tip.



I used Print Production with Adobe Creative Suite Applications : Chapters 4-5 as my source for this blog.


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