Digital BW, The Print

Daniel,

Thanks for the heads-up. I'm using PS6 on Mac OS 9. Where can 
I get the latest versions of the curves? I followed the link from MIS 
to Paul Roark's web site, but there wasn't any detailed technical 
information or any curves to download there.

--- In DigitalBlackandWhiteThePrint@y..., Daniel Perez 
<tronicart@y...> wrote:
> Jacques,
>   What platform are you working on?  I believe the
> curves for PC have been better worked than those for
> mac(and if you are on PC, what OS?).  For the 1280 on
> PC, I think version 13 of the curves are the latest. 
> Don't know if MIS has the latest for all printers.
> Also, what version of PhotoShop are you running? 
> These curves perform far better on PS6 than PS5.5.
> 
>  -Daniel
> 
> --- jacques10040 <jacques10040@y...> wrote:
> > I've installed MIS VM ink carts on a 1280 and tried
> > the Roark 
> > workflow current on the MIS site, but my prints are
> > coming out 
> > slightly posterized in the midtones and lacking
> > black. I've had the 
> > latter problem using the Brandin workflow on an 1160
> > with MIS 
> > original quadtones as well. The problem is not in
> > the file: I'm an 
> > experienced scanner, and one of the images is a
> > professional 
> > RGB drumscan.
> > 
> > 1) lack of black:
> > I clipped a bit into the black to try to force the
> > printer to use more 
> > black ink in the deepest shadows, but these areas
> > remain 
> > unconvincing, and dark areas just turn muddy. I am
> > now 
> > tweaking the black channel in the transfer function,
> > and that is 
> > looking promising, but it darkens the image overall.
> > I guess I 
> > need to reduce the amount of dark gray ink used
> > (cyan position?) 
> > to offset the increase in black. Am I on the right
> > track here?
> > 
> > 2) midtone posterization:
> > Transitions in the midtones are not smooth. This is
> > particularly 
> > evident in shadow areas under the chin on a softly
> > lit portrait. 
> > Transitions from light to dark gray are abrupt, and
> > separation 
> > within the dark areas is lacking. The lack of black
> > (stubble on the 
> > chin, for example) makes dark areas look mushy.
> > 
> > These problems crop up with both warm and cool
> > curves, worse 
> > with the warm, and are not apparent on a calibrated
> > monitor or in 
> > prints made with Epson color ink or black ink only.
> > I don't 
> > understand how the Roark and Brandin curves were
> > created, so 
> > I have no idea how to go about modifying them. So,
> > I'm tweaking 
> > the transfer function instead. I'm aiming for a look
> > similar to what 
> > you get with the Epson black ink only, with plenty
> > of pop and a full 
> > range, but without the dottiness.
> > 
> > Anyone have any suggestion about how to address
> > these two 
> > issues? Thanks in advance.
> > 
> > Jacques Cornell
> > 
> 
> 
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