Re: Image upsizing in PS or Scanner?

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----- Original Message -----
From: Mark Hochman <mhochman@webryders.com>


> Here's something I'm not sure has been covered before and I've been
> wondering about. Say you are using a scanner with a resolution of 600 x
1200
> optical. If you scan at 600 dpi you are sure to get a completely optical
> scan. But say you scan at 1200. Is then only one dimension upsized while
the
> other remains the same?
>
> Now what if you scan at 600 and upsize in Photoshop? Then both dimensions
> are increased. The question being what would be the better method to
reduce
> image losses? Or would it even be noticeable one method over the other?

I've always assumed it is better to take advantage of all optical
resolution.  If you scan at 1200 dpi (on a 600x1200 scanner) only one
direction would be interpolated, rather than both if you scanned at 600 and
resampled to 1200.

Gary

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