QTR-Quadtone RIP

I was never very happy with Channel Mixer.  I¹m now exploring Calculations
in PS/CS3 for that purpose.  You might have look there too.

Harry


On 3/2/08 1:36 AM, "cteditions" <cteditions@...> wrote:
> 
> Hi All,
> 
> I have successfully created good solid curves, linearized data and ICC
> profiles through 
> QTR, and have done so using "No Color Management" at every step.  With images
> I almost 
> always start out with a 16-Bit RGB file and do all of the serious image
> editing, spotting,
> etc. at this stage.  When I am satisfied with the image I use the "Channel
> Mixer" with the 
> "Monochrome" box checked to convert the image to gray values – of course it
> isn't actually 
> "converted" yet which brings me to my question… I have to "Convert to
> Grayscale" first or I
> won't see my profile listed in the dropdown menu, but once I have done this
> and I choose 
> my profile I end up with a significant change to the grayscale values.
> 
> I would like to use Channel Mixer but what's the point if my values are going
> to change 
> from what I desire?  And, once I have applied my profile then I have to make
> an adjustment 
> layer with "Curves" to get the image back where I want it.  What am I
> missing??  All of a
> sudden it seems like I have to create an adjustment curve whether I go through
> the 
> "Calibration" and curve creation process or not.
> 
> I have many B&W images that are still in Adobe RGB (1998) with the Channel
> Mixer box 
> checked and when I convert these to Grayscale and then apply my profile I end
> up having 
> to make a serious adjustment curve that ends up just destroying more
> information.  I have
> always tried to stay in 16-Bit RGB (1998) until final tonal adjustment and
> then convert 
> precisely for the reason of NOT destroying information but now it seems I have
> to convert, 
> apply profile and then make another adjustment layer.  Is there a better way
> of working??
> 
> Also, if I use "No Color Management" the whole time in Calibrating,
> Linearizing and 
> creating an ICC Profile why won't my image print correctly if I choose "No
> Color 
> Management" when printing it?
> 
> I work on a Mac and use an Epson 2400 printer.
> 
> Please help if you can and thank you,
> 
> Cody


Harry F. Lockwood




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