Re: Really Really Frustrated
Re: Really Really Frustrated
- Subject: Re: Really Really Frustrated
- From: Dave Camp <email@hidden>
- Date: Wed, 08 Nov 2000 10:01:58 -0800
on 11/7/00 10:48 PM, Chris Murphy at email@hidden wrote:
>
Images aren't made out of dots. It's made out of pixels. 300 pixels per
>
inch is substantially different than 1440 dots per inch. A dot has fixed
>
density (either 0% or 100%) and a pixel has a range of density (levels).
>
Pixels implies continuous tone, and it takes a whole lot more dots (than
>
pixels) in order to get something that mimics continuous tone.
>
>
So comparing 300ppi to 1440dpi, 300ppi definitely has more information in
>
it.
As long as we are dissecting printer terminology, keep in mind that 1440dpi
is the addressable resolution of the printer, not necessarily the ink drop
size. And most printers, if they laid down 1440 drops of ink in a row, would
make a large puddle unless you were printing on a sponge. Part of what the
halftone algorithms do is space the drops out far enough to prevent pooling
of ink.
Dave