>image manipulation software (Photoshop for instance). You will
>have to play with the image size output (you have a choice -
...
>think the default option is either 72 or 98 dpi. Usually
>anything 250dpi or higher prints just fine, but the files will
>be huge. I generally double or triple the suggested
>measurements to get a decent printable resolution.
Generally speaking, and for reasons I confess I don't understand
well, the dpi of the image should be half of the dpi resolution
of the output device. So, for a 300dpi printer, save your image
at 150dpi. Likewise for 600dpi printer use a 300dpi image.
I know it seems counter-intuitive, but the tests I've run bear
it out. The reason has something to do with a printer's LPI
(lines per inch) being half of it's addressable resolution -
DPI. I learned this from the Adobe PhotoShop helpfile (v4 if
I remember correctly).
Also bear in mind that different graphics programs handle
the printed size differently (the inches-on-paper dimension
is actually completely independant of pixels-on-screen or
the dpi number recorded in the file on your hard disk).
cheers,
-matt
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