[argyllcms] Re: Black&White Profiling Printing
- From: David Cary <cdecary@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 16 Dec 2011 14:44:43 +1300
Also I would like to ask which value to use from a chart read to
manually make your own digital negative QTR profile. I am using the L
value from Lab, but chartread can read a wedge automatically for me.
The output is XYZ and I am unclear if I should use the Y value (and if
a gamma is already applied to this value) or if I should average the
X, Y and Z values (and if a gamma is already applied to theese values
for the Yule-Nielsen effect)
Thanks for your work.
David
On Fri, Dec 16, 2011 at 2:37 PM, David Cary <cdecary@xxxxxxxxx> wrote:
> If you are making a toned print from a greyscale file, such as a
> cyanotype or a tinted carbon transfer, is it possible to read a wedge
> created by something like: "targen -d2 -N1 -g101 -f101 file" to make a
> soft proofing profile to apply to monochrome RGB files?
>
> On Fri, Dec 16, 2011 at 1:53 PM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
>> Jose Pereira wrote:
>>> ³Error - Output device input file has unhandled color representation
>>> 'K_XYZ'²
>>
>>> OK! but, it is possible to do monochrome printing profiles?
>>
>>
>> Hi,
>> sorry, monochrome profiles are not currently supported. It
>> wouldn't be too hard to add support (although it is trickier than
>> it appears, because the B2A conversion has to convert to monochrome),
>> but I've simply never got around to it.
>>
>> See <http://www.argyllcms.com/doc/Limitations.html>
>>
>> Graeme Gill.
>>
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