Thanks for the information!
As I guessed I had one wrong setting that doubled my file size: MAXIMIZE
COMPATIBILITY.
I had the Edit --> Preferences --> File Handling --> Maximize PSD File
Compatibility set as "allways". This setting doubles the file size. Now when
that setting is set to "never" the file size doesn't increase almost at all.
So my problem was solved. Thanks!
Olli
On Wed, 01 Jun 2005 10:03:20 -0400 "om2@xxxxxxxxxxxxxxxx"
<om2@xxxxxxxxxxxxxxxx> wrote:
>
> In a PSD file, Photoshop only stores the settings for the adjustment
> layer.
> As you can see, this file only increased a few percent with the
> addition of
> an AL saved to a PSD file. But the same file saved as a multi-layered
> TIFF
> has separate copies of the image inside the file. If you look save the
> TIFF file with the "Layers" box ticked-off, you get zero increase in
> file
> size, as all the layers are merged.
>
> 3-straight.tif 5.88MB
> 3-one-adj-layer.tif 10.29MB
> 3-one-adj-layer-flat.tif 5.88MB
>
> 3-straight.psd 4.43MB
> 3-one-adj-layer.psd 4.57MB
>
> I save any file that I want to preserve as either/both a PSD, a TIFF,
> and
> maybe a smaller-version JPG. If there has been significant editing,
> then
> the PSD file preserves all that work. The TIFF is only archival. I
> don't
> think you have to worry about Photoshop not knowing how to read an old
> PSD
> file for our lifetimes. In any case, there will always be utilities to
> preserve the file attributes, given the large installed base of PS
> users.
>
> Skip
>
> Original Message:
> -----------------
> From: orava@xxxxxxxx
> Date: Wed, 01 Jun 2005 11:17:43 +0300 (EEST)
> To: olympus@xxxxxxxxxx
> Subject: [OM] Photoshop Adjustment Layer versus file size
>
>
>
>
> Hello all!
>
> I am embarrased to admit that until yesterday I wasn't aware of one of
> Photoshops greatest tools: Adjustment Layers.
>
> So far I have made all the changes in tiff-images that I have scanned
> from
> Provia 400. Now when I got to know adjustment layers I realised that
> there
> is
> no need to make permanent changes in the files, only to add information
>
> concerning changes that will be made when I open the image in Photoshop
> again.
> (This methods saves my images and I can make different versions of the
> same
> photo without losing quality.)
>
>
> But now to my questions:
>
> I am just wondering why does the file size double when I add an
> adjustment
> layer to the photo and save it as TIFF or PSD. I read from the web that
>
> adjustment layers shouldn't increase file size almost at all, but for
> me it
> really does! Could there be a certain setting that I should use so that
> file
> size wouldn't explode in this way?
>
> Do you find it safe to archive my photos (that include adjustment
> layers)
> as
> TIFF or is it absolutely best way to save them as PSD? I am just
> thinking
> decades to come and I am absolutely sure that tiff will stay alive but
> I am
> not
> 100% sure about psd because I think it might be subject to changes...?
>
>
> Thank!
>
> Olli
>
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--
Olli
---------------------
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