Digital BW, The Print

on 8/30/02 11:25 AM, Mitch Alland at malland@... wrote:

--------
[I posted this message on the Piezography list a few days ago; as I have ot
had any responses there, I am reposting this message here]
-------

On the Imaconusers forum someone posted an interesting message stating that
for Piezography printing he scans with his Imacon 848 the following way in
order to get the longest possible tonal range:

-scan into into 16-bit grayscale rather than RGB
-set the the histogram to -2 black and -2 white and manually adjust the
curves
-gamma set at 1.8

Of course this does result in a long-tone scan but needs substantial
adjustment work in Photoshop. Also, the Preview does not match the Final
Scan because the Imacon scanning software does not provide for inclusion of
profiles in grayscale scans. But this obviously does not matter in this type
of scanning workflow when one is going for the longest tonal range possible.
He states that scanning at 1.8, rather than the 2.2 most people use, gives
the best reproduction and the greatest control over seperating different
tones.

My own scanning workflow with my Imacon PII is to scan into 16-bit RGB at
gamma 2.2 and then to use Channel Mixer in Photoshop when converting to
grayscale.. In addition, I make curve adjustments and use the gray
eyedropper tool to set neutral tones in the Imacon software. Then I make
final adjustments in Photoshop. Perhaps the grayscale scanning workflow
outlined above is better for Piezography workflow than my RGB workflow
because the Preview image in the Imacon software is not as accurate as that
of Photoshop.

If you have experience with Imacon scanning or similar exoperience with
other scanning software, please let me have your reaction.

--Mitch/Bangkok


Yahoo! Groups Sponsor   ADVERTISEMENT

Please visit the Group Homepage to check the Files, Bookmarks, Polls and
other resources as they are often being updated. The page is at:

http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint

If you wish to receive no emails or just a daily digest, or you wish to
unsubscribe, please edit your Membership preferences by visiting this same
page.

Please follow these basic guidelines:
- Include your full name with your message.
- Include the address of your website, if you have one.
- As threads develop, trim off excess portions of earlier messages to keep
them short.
- As the topic of a thread changes remember to change the subject header.
- Good manners are required at all time. No personal attacks or
"flames."
- Complete your Yahoo profile.
- Before posting a question, search the message archives and the various
resources on the homepage.




Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
<http://docs.yahoo.com/info/terms/> .

Hi 

I have an imacon 848.  What do you mean by setting the Histogram at -2 black
and -2 white?

Are you doing this in the File-Setup section under the contrast tab? or
somewhere else.

Thanks

Greg
--

Gregory James Phelps
Gregory James Phelps Photography
2334 Boca Chica #600
Brownsville, TX 78521

Web: http://www.gjphelps.com
http://www.gjphelps.com/currentwork
http://www.gjphelps.com/newportraits
email: greg@...

Ph. 956-546-3700
Fx. 956-541-5264




[Non-text portions of this message have been removed]