Digital BW, The Print

Forgot to add a link to a sample hue blended image to my last post.   
This one was about 60% Lenswork warm and 40% Seagull Selenium.

http://www.pbase.com/scho/image/65156176


On Aug 14, 2006, at 2:12 PM, Carl Schofield wrote:

> Roy,
>
> I've also been using your create-icc script to generate icc  
> profiles for toning grayscale images and it works very well.  I  
> also made a simple Photoshop action for blending hues with any two  
> icc profiles and put this on my filesharing site along with 4  
> sample icc profiles to use for hue blending (QTR warm, lenswork  
> warm, QTR cool, and Oriental Seagull toned selenium).  These icc  
> profiles are only for toning and are not to be used as print  
> profiles.  The resulting toned RGB files can be printed using any  
> RGB or CMYK workflow, but there will be some variance in print hues  
> obtained, depending on paper and print profile quality.  As you  
> observed, a high quality CMYK profile used with a RIP can provide a  
> good print match.
>
> Regards,
> Carl
>
> http://homepage.mac.com/scho/FileSharing5.html
>
> On Aug 13, 2006, at 10:26 PM, Roy Harrington wrote:
>
>>
>> Most discussion here revolves around getting your grayscale images  
>> to print
>> on your inkjet printer with your own personal tones -- warm/cool/ 
>> sepia/split
>> or the latest idea matching Lenswork printing.
>>
>> But once you do that, what about showing or reproducing those  
>> tones other than
>> in your prints. I.e. wouldn't it be nice to have your web site  
>> show the actual tone
>> of your prints. Or how about making postcards that match your prints.
>>
>> Naturally you can convert to RGB and experiment till you get  
>> something close.
>> But Color Management and ICC profiles can do all this for you  
>> automatically..
>> I've recently been printing with my own custom split-tone curves  
>> and wanted to
>> make some cards. The card printer wants CMYK separations for  
>> printing. In the
>> past to be on the safe side I just shipped them CYMK's that were  
>> just K ink so
>> they were just one ink printing. The results were fine but not  
>> special.
>> Well now they provide full CMYK profiles of their printer and in  
>> fact have one that
>> has maximum GCR conversion -- i.e. minimum color inks. This of  
>> course has
>> been the method we're all using on inkjets. So I figured this was  
>> all worth a try.
>>
>> Naturally I print with QTR and have my custom profiles. I also  
>> create custom ICCs
>> for soft-proofing in Photoshop, so I can see the exact color of  
>> the prints of the
>> display. Well its easy to convert the color to RGB or CMYK.
>>
>> Simply - Convert to Profile from grayscale to the custom QTR gray  
>> ICC profile.
>> This will now look exactly like your soft-proof. Note that it's  
>> still a grayscale
>> file but it has color. Use the Eye-Dropper and see LAB values.
>>
>> Now you can Convert to AdobeRGB or sRGB and maintain the colors on  
>> the web.
>>
>> In my case I Converted to the printer's CMYK profile. Color has  
>> been maintained
>> thoughout the whole process. I sent the CMYK files in and the  
>> cards came back
>> a great match to the tone of the actual prints.
>>
>> ----------------------
>>
>> The talk recently about matching Lenswork tones is also easy to  
>> do. Measure a
>> few points in the magazine, or for that matter make up LAB values  
>> that you'd
>> like to match. For instance take these LAB values that Paul  
>> posted. Here they are:
>>
>> 9 0.9 0.7
>> 27 2.1 3.3
>> 40 2.4 4.2
>> 53 2.4 3.3
>> 75 2.0 1.6
>> 93 1.2 -1.5
>>
>> Just put them into a text file and drop it on QTR-Create-ICC. You  
>> now have an ICC
>> profile that can be used like above. The two Convert-to-Profiles  
>> will tone any
>> grayscale image in any desired way.
>>
>> Roy
>>
>> .
>>
>> 
>



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