Digital BW, The Print

On Sun, 28 Sep 2003, John Hollenberg wrote:

> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Thomas Fors
> <tom@f...> wrote:
> 
> > I've never seen that behavior before with IP.  I have noticed that I
> get better B&W prints from IP though when I use grayscale files than
> when I use RGB and print with the gray profiles.
> 
> Better meaning more neutral, or in some other way?
> 
> --John
> 

Sorry..  By better, I meant that I get visibly darker blacks when using grayscale than with RGB.  

--Tom

> Sorry..  By better, I meant that I get visibly darker blacks when
using grayscale than with RGB.  

Perhaps that is due to the fact (I think) that the "Black Point
Adjust" slider works for images in RGB, but not for grayscale images.
 Could it be that if the Black Point slider were adjusted properly
that the RGB image would give the same black as grayscale?  The reason
I ask is that Andrew Rodney on Imaging Revue web site told me that
there was no advantage to grayscale for IP, but that only RGB images
could take advantage of the Black Point slider.

--John

My tests results do not agree with Mr. Rodney.  Grayscale images with gray printerprofiles produce different results with different settings of the slider.
 
Tom Baker

John Hollenberg <weasel@...> wrote:
> Sorry..  By better, I meant that I get visibly darker blacks when
using grayscale than with RGB.  

Perhaps that is due to the fact (I think) that the "Black Point
Adjust" slider works for images in RGB, but not for grayscale images.
Could it be that if the Black Point slider were adjusted properly
that the RGB image would give the same black as grayscale?  The reason
I ask is that Andrew Rodney on Imaging Revue web site told me that
there was no advantage to grayscale for IP, but that only RGB images
could take advantage of the Black Point slider.

--John


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--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Tom Baker
<tbaker1328@s...> wrote:
> My tests results do not agree with Mr. Rodney.  Grayscale images
with gray printerprofiles produce different results with different
settings of the slider.

That is good to know.  I am printing a grayscale version of the same
print I just did with RGB.  Will look at the blacks myself.

Thanks.

--John

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Thomas Fors
<tom@f...> wrote:

> Sorry..  By better, I meant that I get visibly darker blacks when
using grayscale than with RGB.  

I just printed the same image, first as RGB and then converted to
grayscale before printing in IP.  The prints are indistinguishable to
my eyes (my eyes are fairly sensitive).  I am using IP 5.6 with Black
Point slider set in same position for each print (at zero).  Any
thoughts why I am not seeing a difference?

--John

You're printing with the same printer profile.  That is, you're changing the input image profile, but you're printing on the same paper, with the same printer profile.  The debate is that you can't get neutral b&w images with b&w input files, or b&w image files converted to RGB, with a printer profile that is not a gray profile.  If you use a gray printer profile in IP you will alway get neutral (if you don't adjust) with IP's gray profiles.
 
I have some RGB files that I would dearly love to get neutral b&w areas on the print.  So far, I have not been able to do that without, at the same time, altering the color portions.  If someone know how, I'd appreciate the info.
 
Tom Baker

John Hollenberg <weasel@...> wrote:
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Thomas Fors
<tom@f...> wrote:

> Sorry..  By better, I meant that I get visibly darker blacks when
using grayscale than with RGB.  

I just printed the same image, first as RGB and then converted to
grayscale before printing in IP.  The prints are indistinguishable to
my eyes (my eyes are fairly sensitive).  I am using IP 5.6 with Black
Point slider set in same position for each print (at zero).  Any
thoughts why I am not seeing a difference?

--John


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- 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.
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- Before posting a question, search the message archives and the various resources on the homepage. 




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