From: Big Al 
Subject: Re: Why do their heads look too narrow, or wide
 
On 01/02/2017 02:30 AM, micky wrote:
> But it does say 2400 dpi which was their minimum standard, but he still
> said it wasn't hi def, maybe because it was only 1.8 meg, which it said
> was not enough.
DPI has nothing to do with resolution.
If you've seen images that are horribly pixelated, they could still be 
2400 dpi.    That just means that the image is using 2400 dots in one 
inch to represent the picture.   And that 2400 dots could be 240 big 
square looking pixels that are 10 dots wide each. So you have a 
collection of 10x10 colored squares in the image and that's what makes 
it look pixelated.
 
I can take a really grainy picture and change the DPI and scale the 
image larger to make its size mega pixels in photoshop, but the picture 
is still grainy or pixelated.  "You can't get blood our of a rock".
 

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