Digital BW, The Print

Hi guys, excuse my ignorance but why do I continue to get green casts in
my black and white (and grey) prints from my Epson 2100 even after
eye-one/profile maker calibration? Is there something fundamental that I
don't understand or am doing wrong?

Philip

Hi Philip,

Have you checked out Carl Schofield's "photorealistic" method of 
printing that was discussed here some months ago? He explains his 
method here:

http://www.luminous-landscape.com/reviews/printers/2200-bw.shtml

I was initially sceptical since I've always read that "No Color 
Adjustment" is the way to go using various paper profiles, but this 
method has worked remarkably well for me. I find that it also opens 
up the shadow areas, whereas some of the canned Epson profiles tend 
to be too contrasty with blocked shadows.

I've also been experimenting with OPM (Open PrintMaker) and QuadTone 
RIP on a Mac and they give gorgeous results as well, using OEM inks 
(I'm afraid I lost your original post so I don't know if you're on a 
Mac or PC).

Good luck,

Diana Park

***************************

>From: "philipjandrews" <philipandrews@...>
>Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
>Date: Wed, 08 Oct 2003 23:07:07 -0000
>To: DigitalBlackandWhiteThePrint@yahoogroups.com
>Subject: [Digital BW] Re: Printing greyscale on Epson 2100
>
>Hi Ken, thanks for the matamerism tip.
>
>At the moment I would just be happy to get a clean (green cast free)
>print under one light source. Any tips on creation of a profile that
>will give me neutral greys.
>
>Philip

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

For the first time after two years of on-again/off-again dabble-ing, I can 
finally print!  I bought a set of Lyson QuadBlack inks way back then, and 
never had any success in getting a printed image that resembled anything 
close to what was on my screen.  That was Windows.

So for the past few weeks I've been trying to pull this off in Linux with 
Roy's QuadToneRIP package (this is very much a spare-time hobby for 
me).  And as of tonight, I'm getting prints that translate very well from 
screen to paper!  I manipulate the image in GIMP, and print it using qtcups.

In fact, I may have achieved the world's cheapest system for QuadTone 
printing -- other than inks and paper, all I've paid for is my film scanner 
and a $100 printer from eBay.  GIMP, Linux, and QTR2 are all free -- I 
don't even own a PhotoShop license....

My method for getting all of this working ended up to be quite 
unscientific.  I couldn't ever get Roy's CMYK Calibration document to print 
correctly in Linux, and I certainly don't own a densitometer or any other 
fancy calibration gear.

So I resorted to trial and error.  I put a 21-Step image on the screen, and 
kept mucking around until my prints looked like the 21-Step.


I ended up with some rather wacky settings -- and I certainly confess 
ignorance, here.  So if any of you have any insights as to what I'm doing 
to myself behind the scenes, please let me know:

--*-- I had to do some extreme boosting on the Yellow channel, because 
anything under 10% was pure white on my prints.  I cut the stated 
percent-of-black all the way down to 1%, and boosted the Yellow channel to 
1.2 in qtcups.  Magenta went down to 10% of black, and Cyan was 44%.  I 
kept all of the other QuadTone RIP settings at their default values.

--*-- In qtcups, I brought gamma all the way down to 0.7, and increased 
saturation to 1.15.


Wacky or not, what I see in GIMP is pretty much what I see on paper -- so 
I'm quite happy.  I can finally start looking at my work on something other 
than a contact sheet!

Thanks in advance for any suggestions or advice...

Allan

On 10/19 21:05, Allan Metts wrote:
> 
> 
> Wacky or not, what I see in GIMP is pretty much what I see on paper -- so 
> I'm quite happy.  I can finally start looking at my work on something other 
> than a contact sheet!

Very cool!

When do I see the How-To at www.tldp.org? :)

-- 
Eric
Eric's PAW page:  <http://www.maquiling.org/paw>
PAW main page:  <http://www.jeffery-nola.com/links.html>

At 12:51 AM 10/20/2003, you wrote:

>When do I see the How-To at www.tldp.org? :)

Good idea -- I think Roger Sopher is also working on a Linux-QTR2 
HOWTO.  His calibration procedures are certainly more "proper" than mine, 
but I think he's doing some of his work in Windows/Photoshop.  Roger - 
maybe you and I should collaborate and provide two different perspectives?

A----

On Mon, 2003-10-20 at 06:54, Allan Metts wrote:
> At 12:51 AM 10/20/2003, you wrote:
> 
> >When do I see the How-To at www.tldp.org? :)
> 
> Good idea -- I think Roger Sopher is also working on a Linux-QTR2 
> HOWTO.  His calibration procedures are certainly more "proper" than
> mine, 
> but I think he's doing some of his work in Windows/Photoshop.  Roger -
> maybe you and I should collaborate and provide two different
>  perspectives?
> 
> A----

Hi Allan,

My "How To" is pretty much finished for the basic installation of QTR2
into a stand alone Linux box. David Wroblewski is considering doing one
on calibration and the like within Linux. The area that needs a lot of
work is setting up to print from windows through Linux.I think that
Daniel Staver has made this work but I have not as of this time. 

I sent a copy of the basic "How To" to Martin for inclusion in the B&W
files section.If you would like a copy I'll send it to you.

At this time I do all of my image editing in pshop/windows and then
print the image from Linux using QTR2.Its a bit unwieldy but works
nicely. 

Roger

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