Today we looked at the differences between a vector and a bitmap. Bitmap images are made up of lots and lots of little pixels each with an individual colour and because of this it takes up a lot of memory to save these files in programs like Photoshop because it has to remember the colour of every individual pixel. These images also pixelate when blown up or made smaller from there original size.
However vector images are made up of many individual objects that wont pixelate when re-sized since the program remembers the shapes not the pixels, this also means that it takes less memory up.
DPI stands for dots per inch and means just that. The human eye picks up around 500 DPI before the individual dots cant be seen any more.A computer monitor shows 73 DPI
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