Hi Charles-
Just wanted to let you know your not alone. I've been working with the
same workflow.
I am also experiencing posterization of my darker midtones with the
neutral curves. So if you do find a solution please let me know.
thanks
Mike Bragg
byronbulb wrote:
> Hi :)
>
> So I've tracked down some of the problems I was having - first a bad
> cartridge, then a monitor that was miscalibrated so I wasn't getting
> an accurate sense of my tones.
>
> Now that those are behind me I think I'm more or less clear on how
> this system works - but I'm still finding that I have problems getting
>
> the look of continuous tone. The neutral curve I'm using (the mac 1280
>
> curve) works pretty well, although I get some posterization in the
> darker midtones. The medium warm and warm curves (again 1280 mac
> curves) however sometimes give me severe posterization.
>
> Here is my process:
>
> I open the image - either it is already 16-bit greyscale, or it is
> 16-bit color, which I then convert to greyscale using the channel
> mixer.
> Once I have a 16-bit greyscale file, I fiddle with the curves and
> levels until it seems correct, and then I convert it to RGB using the
> Adobe RGB working space. (If it started as RGB and was converted with
> channel mixer, it stays an RGB file the whole time, but I make sure
> the profile is Adobe RGB) I then apply the 1280 curve and print using
> these settings:
>
> I am printing on EAM
>
> Working Space: Adobe RGB
> Print Space: Same as source
> Paper: PQIJ
> Resolution: 1440
> Microweave is on
> high speed is off
> Color Controls are activated, all sliders at zero, "Auto"
> Gamma is 1.8
>
> I also tried using the 1270 curves with sRGB colorspace and all other
> settings as above, results were almost identical.
>
> I'm totally willing to believe the problem is with my files, but I
> could use some advice about how to fix it.
>
> thanks much,
>
> Charles Bandes
>
>
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[Non-text portions of this message have been removed]Message
Re: [Digital BW] Problems with mac curves
2002-04-09 by Mike Bragg
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