RE: Profiling Epson 5500 w/Spark
RE: Profiling Epson 5500 w/Spark
- Subject: RE: Profiling Epson 5500 w/Spark
- From: Scott Olswold <email@hidden>
- Date: Thu, 18 Jul 2002 09:16:13 -0400
Glen,
Simulation is a transitory profile, not an input profile (nor an output
profile either). The Simulation profile works this way:
Incoming CMYK (including any Spark-converted RGB data with the RGB
Separation set to "Simulation") is further converted into the Simulation
profile selection, except K which is preserved (I don't know if Spark offers
Full Output GCR or not; if it does then selecting this will also create new
K). Simulation typically has two (or three, if Full Output GCR is available)
options: Quick and Full. Quick converts to the Simulation gamut by modifying
DMax per channel. Full (aka Full Source GCR) converts to the Simulation
gamut by dirtying the inkset a bit to achieve a truer C, M, and Y. Full
Output GCR takes the inbound CMYK, puts K back in CMY and then reseparates
to achieve C'M'Y'K'.
The output profile is modified during calibration. Essentially it is the
same as linearizing a profile in ProfileMaker Pro. I don't see where keeping
Simulation and Output together would do much of anything, given that
Simulation is an output profile as well.
I'm sure David Macy will correct if I'm inaccurate anywhere, but this is how
I understand it.
Scott Olswold
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