Nothing. Changing the ppi has NO effect on the image at all, just the
'reference' to the size it would be if that many pixels at that many ppi (or
lpi) where used to make up the image.
The only place it seems to matter is in photoshop where, if you don't change
it, you end up printing an image the size of a 35mm negative.
I know. I do it all the time when I forget to correct it.
But, in the end, 1 ppi or 1000ppi, you still have the same digital image.
Tom
> >
>
> Righto, I could do with an explanation with this: what do you mean by
> reducing the resolution? I can't understand how image size can be
> related to anything other than the number of pixels. I've never
> understood what effect (if any) changing the ppi has on the image.
>
> Roger
>
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