[scribus] Black and blacker.

[Stéphanie Vilayphiou]

On 27/10/2010 19:47, John Culleton wrote:
> On Wednesday 27 October 2010 13:16:07 Stéphanie Vilayphiou wrote:
>    
>> On 27/10/2010 18:47, John Culleton wrote:
>>      
>>> On Wednesday 27 October 2010 12:37:53 Gregory Pittman wrote:
>>>        
>>>> On 10/27/2010 12:11 PM, John Culleton wrote:
>>>>          
>>>>> I am correcting a cover file built by someone else. The author
>>>>> wants a certain line of white text on black background covered
>>>>> up. No problem using a rectangle. But to get the rectangle to
>>>>> match in Scribus I need to use a new color of about 96% K. That
>>>>> makes the rectangle match in Scribus but unmatch in acrobat
>>>>> reader. A rectangle of pure 100% black does fine in Acrobat
>>>>> Reader but is noticeably blacker in Scribus.
>>>>>
>>>>> I am using the latter choice. But only the proof copy will tell
>>>>> for sure.
>>>>>
>>>>> The original artist used Photoshop at some point in the
>>>>> process. Who knows what black she or he used? However it is
>>>>> interesting that a black background which is jet black in
>>>>> Acrobat Reader shows up as a very dark gray in Scribus.
>>>>>            
>>>> we have had this sort of discussion before:
>>>>
>>>> http://wiki.scribus.net/index.php/What_is_Rich_Black%3F
>>>>
>>>> The casual user has to become aware that there is Black, and
>>>> there is Black. Intuitively, people want some absolute blackest
>>>> of black in their output, but as Louis indicates in this quoted
>>>> ML post, there are technical issues that come about with heavy
>>>> use of a single ink or adding CMY to a lot of K.
>>>>
>>>> In the end, ask your printer.
>>>>
>>>> Greg
>>>>
>>>> _______________________________________________
>>>> scribus mailing list
>>>> scribus at lists.scribus.net
>>>> http://lists.scribus.net/mailman/listinfo/scribus
>>>>          
>>> The printer, in this case LSI, wants rich black but no more than
>>> 240% total ink coverage. The usual limit is 260%. I am just
>>> trying to match what exists on the cover.  I don't know a way to
>>> determine what the previous person used other than trial and
>>> error.  I am not dealing with LSI directly but through the
>>> customer.
>>>        
>> ah sorry, missed that mail. you seem to know all that :)
>> If you want the most intense black, I suggest you follow up
>> instructions for Rich black if CMYK, or 100% black for B&W. I
>> usually don't trust the preview of colors in layout software.
>> Acrobat has a pretty good color and overprint preview.
>> does this help?
>> S.
>>      
> Is the Acrbat Reader view more reliable than the Scribus view for
> color matching, in your opinion?
>    
weird, I had two notices that this mail didn't work...
In general, yes. Although when you print on uncoated paper, normally the 
colors are less saturated than what you see on screen. I don't know how 
Acrobat manages ICC profiles. I know Indesign does, I think I saw 
something about that in Scribus, maybe with a plugin (?) (never had the 
need yet)

-- 
----
Stéphanie Vilayphiou
http://stdin.fr/
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