Bitmap images
bitmap are always being composed onto your computer, a bitmap is made up of a map of dots. common bitmap filetypes include bmp which is the raw bitmap format.
Bitmap files are limited to the resolution when they are created. If you want a good print quality then will need it to be hi-resolution file, this mean you have to have a large file. If you use a low-resolution file the picture will come out fuzzy and not clear, the image will look normal on screen though. If you’re using a colour printer the designed will be for CMYK colour.
Vector images
You can see vector images are better than bitmap when you are magnifying an image. Vector makes more compact files then bitmap, this means there quicker to open and download.
You can see the difference between the pictures, the picture on the left is a real photo and the picture on the right is edited by vector illustrations. You can tell by the graphic effect on the vector picture.
vector images have small file sizes, you can stretch a vector image and it want lose it’s quality, vector images are made up by numbers and shapes, vector images are used for billboard an other large pictures
what’s the difference between a vector and a raster image
We see computer images all the time, but we rarely stop to think about the composition of those images. How are they put together? The vast majority of computer graphics fall into two categories: vector and bitmap.
a vector is more complicated and time-consuming to create than a bitmap, but both are in wide use. A vector has no pixels but a bitmap does that’s why the vector image looks clear. image file formats are for compressing images so they can be stored into a something like jpeg or mpeg the difference between the to is that mpeg is used for moving images and jpeg is for still images.
unlike bitmaps images a vector graphics is not made up of a grid of pixels but are compressed of vectors which have a start and end point. vector based images are not made up of a specif number of dots, they can be scaled to a larger file size and the image quailty want be losted.
