[thelist] photoshop print ready file (not the web)

Andy Warwick mailing.lists at creed.co.uk
Tue Oct 15 10:27:01 CDT 2002

On Tuesday, October 15, 2002, at 04:12 PM, Jason Bauer wrote:

>> -----Original Message-----
>> From: thelist-admin at lists.evolt.org
>> [mailto:thelist-admin at lists.evolt.org]On Behalf Of Andrew Maynes
>> Sent: Tuesday, October 15, 2002 6:20 AM
>> To: thelist at lists.evolt.org
>> Subject: RE: [thelist] photoshop print ready file (not the web)
>> Does it matter what the pixel dimensions are?  Because it was when I
> changed the
>> dpi the pixel dimensions changed alot even thought the cm stayed the
>> same,
>> apologises for being a bit stupid on this area.
> The size of the image is determined by the DPI (dots per inch) and
> Pixel
> Dimensions. You mentioned that you are at 300dpi, so every 300 pixels
> take
> up one inch of space. If you were at 70dpi, it would only take 70
> pixels to
> take up one inch. This is why when you raise the dpi of an image, you
> get a
> larger pixel count, but the actual printed size of the image stays the
> same.
> Its also why images with a higher dpi look better when printed, because
> there are more pixels to show more detail.

If you want a *very* detailed look at the distinctions between pixels
per inch, dots per inch, lines per inch, screen rulings, etc. see the
sample chapter of Dan Margulis' book Professional Photoshop available


It explains very clearly why you need print files to be of a certain
resolution, and how you can sometimes get away with slightly smaller
files and *still* get better quality.


Andy Warwick
Creed New Media Design, Nottingham, UK

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