I have a question relating to colorbars and reading them with curves applied. Maybe I'm doing this wrong but I've always applied curves to everything on the plate including the colorbars. Recently we had an issue on press where we wanted to check print contrast of yellow and while the scanner reference is set to what we normally used for Gracol and those tolerances, now I'm wondering what would we set it to or even how would we know what it should be on jobs with G7 NPDC curves applied to the colorbars?
Should we not be applying the curves to the colorbars? But if not, then we'd be measuring gray balance there without the curves applied so that doesn't work either, right?
So, I guess if print contrast is too low, indicating filled in, then the gray balance at 75% would be off in the affected color.
Same way with monitoring TVI also, if 50% gray is off, the TVI is off from what it should be for G7. No way to really monitor TVI separately is there? My yellow curve is set to 52% at 50 and my cyan is 44% at 50, so what would the reference point for 50% tint be set to in the press scanner? Doesn't really matter about that does it, just gray balance, which tells you whether your tints are right.
Get back to where I was before, telling the pressman he could run with just a gray balance bar for CMY gray and K and some solids just for keeping it even during the run. He doesn't agree with that one though.
Thanks
Should we not be applying the curves to the colorbars? But if not, then we'd be measuring gray balance there without the curves applied so that doesn't work either, right?
So, I guess if print contrast is too low, indicating filled in, then the gray balance at 75% would be off in the affected color.
Same way with monitoring TVI also, if 50% gray is off, the TVI is off from what it should be for G7. No way to really monitor TVI separately is there? My yellow curve is set to 52% at 50 and my cyan is 44% at 50, so what would the reference point for 50% tint be set to in the press scanner? Doesn't really matter about that does it, just gray balance, which tells you whether your tints are right.
Get back to where I was before, telling the pressman he could run with just a gray balance bar for CMY gray and K and some solids just for keeping it even during the run. He doesn't agree with that one though.
Thanks