Digital BW, The Print

Daniel,

I deleted the Linearize line and scanned the grayscale and read the 
steps in Lab and put them in the curve creation window. It generated 
the LINEARIZE line in the .qidf but it did not create the curve from 
it.

This is what is in the .qidf file. You can see I entered the values 
from the Low to the High.

-PRINTER=Quad1280
CURVE_NAME=UT2-MY-HPhotoRag-neutral-2
GRAPH_CURVE=YES
N_OF_INKS=6
DEFAULT_INK_LIMIT=45
BOOST_K=55
LIMIT_K=
LIMIT_C=45
LIMIT_M=45
LIMIT_Y=0
LIMIT_LC=45
LIMIT_LM=40
N_OF_GRAY_PARTS=3
GRAY_INK_1=K
GRAY_VAL_1=100
GRAY_INK_2=M
GRAY_VAL_2=50.5
GRAY_INK_3=LM
GRAY_VAL_3=17.2
GRAY_HIGHLIGHT=4
GRAY_SHADOW=8
GRAY_OVERLAP=10
GRAY_GAMMA=1
GRAY_CURVE=
N_OF_TONER_PARTS=2
TONER_INK_1=C
TONER_VAL_1=100
TONER_INK_2=LC
TONER_VAL_2=39
TONER_HIGHLIGHT=0.5
TONER_SHADOW=1
TONER_GAMMA=1
TONER_CURVE=
N_OF_UNUSED=1
UNUSED_INK_1=Y
LINEARIZE="15 16 21 25 26 27 28 28 31 33 34 37 41 45 49 55 60 67 76 
87 99 "

-- In DigitalBlackandWhiteThePrint@yahoogroups.com, Daniel Staver 
<daniel@p...> wrote:
> It's very important that you delete the old linearize statement 
BEFORE 
> you print the stepwedge for re-linearization. Otherwise you're 
> linearizing against values which doesn't exist. Linearization is 
always 
> done against an unlinearized curve.
> 
> You can do this with a scanner as well. It's a good way to 
practise, 
> then you can do it properly next time you get access to a 
densitometer 
> again.
> 
> Scan the printed stepwedge without adjustments and bring it into 
> Photoshop. Then read the L values of each step and enter them into 
the 
> linearization in QTR. The values should go from high to low instead 
of 
> low to high. That's how QTR differentiates between the different 
types 
> of readings.
> 
> --
> Daniel Staver
> http://daniel.staver.no