QUADTONE
WORKFLOW PROCEDURE
For Epson 3000

By George DeWolfe


15 March 1999 .  Here's George DeWolfe's revised Quadtone Workflow. George’s workflow was originally designed for the PowerMac G3, so it works on both platforms. Now included in his revised workflow are very good information on what the Epson 3000 sliders actually do. George developed his own Zone System chart which he used in his tests of his workflow and the effect the sliders have on the final output. George’s workflow for Quadtones will appear in April/May issue of the magazine, CameraArts. Without further adue, here is George's latest Quadtone Workflow - kokleong
Equipment
.........................................................................................
  • Epson 3000 printer(with and without Epson Stylus RIP 8.3.1 and PS driver  3.30) 
  • Photoshop 5.0.2, ColorSync 2.5.1, 
  • 32 bit scanner
  • PowerMacintosh with OS 8.1 or a PC Computer
  • MIS Quadtone Inkset; and
  • Sommerset Velvet paper. 
(I prefer to control Brightness and Contrast in Photoshop. This setup also works, with some adjustment to paper setting, in the 700 and the EX). 
 

Procedure, with Standard Driver 
.........................................................................................

1. Color setup for Photoshop

  • Click on...  File |  Color Settings |  CMYK set up | Built in |  SWOP  coated  | 20% dot gain | UCR 2. 
2. Scan a photograph grayscale at between 300dpi or 480dpi and retouch and edit in Photoshop. 

3. Convert to RGB or CMYK(perhaps CMYK gives a bit better black, but the file size is larger). 

4. Print using the Standard Epson Driver: 

  • Printer Color Management On (it doesn't seem to make much difference on or off) 
  • 1400 dpi Photo Glossy Paper setting
  • Error Diffusion and Supermicroweave 
Remarks.Sommerset Velvet might need some brightness control (lightening) either in Photoshop or on the Brightness slider in the Epson 3000 Advanced Dialog Box. 
 
Using Epson Stylus RIP (version 3.30 and PS driver 8.3.1: 1)
.........................................................................................
1.Follow steps 1-3 above. 

2. In the Stylus RIP Print>Options dialog box these are your settings:

  • Media(Quality):  PQ Glossy 1440dpi 
  • Ink:  CMYK 
  • Space:  Epson Stylus RIP Photo Quality 1440 dpi 
  • Press Simulation:  Off 
  • In the Stylus RIP Print dialog: 
  • Space:    Epson Stylus PIP Photo Quality 1440dpi 
  • PostScript Color Management Off 3. 


Remarks: Prints WYSIWIG, but may need some slight brightness tweaking. 
 



 

Epson 3000 Settings and Sliders 
.........................................................................................

Now, a short note on the effect of using different settings and slider values. My normal setup as control was: 

  • Epson Color Stylus 3000
  • Quadtone inks
  • Sommerset Velvet paper
  • ICC Epson Color Stylus1440 Photo Glossy Paper
  • Color
  • Error Diffusion
  • Photo Realistic setting
  • Epson Color Management on
  • null mode on all sliders. 
I used a self-made Zone System Scale, something I could understand!! 


Here's what the Zone System Scale looks like





Results with Normal Setup
...............................................
At the above settings I got a well printed scale, solid black for both Zones 0 and I, Some tonality in Zone II, detail in Zones III-Vii, some tonality in VIII and IX as pure paper base white. 
 
 

Results at various other settings
...............................................

  • Automatic Setting - so close to Photo Realistic as to be indistinguishable. 
  • Vivid Setting -Darker shadows by 1 Zone. Zone V-VII are darker by about 1/3 of a Zone. 
  • No Color Adjustment - Darkens Zones O,I,II,III and IV by a very slight amount, say 1/4 to 1/3 Zone. No effect on Zones V-VIII. 
  • Brightness - At +25 only the light values are affected, and in a peculiar way - Zones VII and VIII are clipped, and VI is lightened only slightly ( I would call this an equivalent of N+1). At +12 Zones VI and VII are lightened by about 1/2 Zone and VIII is clipped.  At -12 only the low Zones 0-IV are darkened by 1 Zone; lights are unaffected. At -25 all the low Zones are darkened by about 1 1/2 Zones, V is darkened slightly and the higher Zones are unaffected. 
  • Contrast - The Contrast slider keeps Zone V the same from +25 to -25 and reduces or expands both high and low ends. At +25 Zones I-III are black, Zone VIII is white and Zone VII looks like Zone VIII.  At +12 there appears to be only a slightly, say 1/4 to 1/3 Zone darkening in the deepest Zones and a similar lightening in the very high Zones. At -12 there is only the slightest reduction from normal in the overall contrast, less than 1/3 stop overall. At -25 Zone II is noticably lighter by about 1/3 Zone, but Zone III looks more like a normal Zone IV, and Zone IV is lightened only about 1/3 stop. V is just a tad lighter. All the higher Zones are lighter by no more than 1/3 Zone. Maybe -25 is the equivalent of an N-1. 
  • Saturation - shows no visible change in Zone Scale from +25 to -25. It seems, though, that at +25 the tones "felt" smoother to me.  
 

By George DeWolfe
 Contributing Editor, CameraArts/ViewCamera
dewolfe@midmaine.com

 

..........................................
All Rights Reserved DigitalDarkroom@Singapore