Re: Photoshop USM and CMYK conversion

[Glenn Barry <glenn@xxxxxxxxxxx>]

What size files are you working on? Are you working on more than one at a time? A
4GB scratch file is huge!

zxiong@xxxxxxxxxxxxxxxxxxxxxx wrote:

> Sorry I inadvently sent out the email before I finished it.
>
> Thanks very much indeed for all the advice. Internet has been my primary source
> of knowledge on photography.  I was forced to pick up prepress because the
> images were each stitched with over 10 originals.  The beauty of doing things
> yourself is that every time you go out, you know which camera to pick up.
>
> I also will output those images to trannies for Ilfochrome prints.  I wasn't
> quite sure at what point I should separate the path and start working on one
> file in RGB and one file in CMYK, for I wish to minimize work load.  Following
> advice from the list I'm thinking of save the master file and do USM using
> different amounts for RGB and CMYK output.  I felt very uncomfortable with
> USM of >200% but that seems to be what press machines need. I did talk to the
> printer and got the parameters for CMYK conversion. I'm bringing the files to
> the printer myself next week to make sure I'm doing the right thing.  Glenn's
> techiques sound very interesting and I certainly would be interested in hearing
> more. The disadvantages of using layers are the large file sizes, particularly
> the scratch files which often filled up my 4GB scratch disk and I had to start
> all over again.
>
> Zonghou Xiong

--
Glenn Barry Photography
Studio 1, Level 1
2-14 Mountain St
Ultimo N.S.W. 2007
Australia
Ph (612) 9211 3080
Mobile 0415 279 366
E-Mail: mailto:glenn@xxxxxxxxxxx
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