The easiest QuadToneRIP digital negative method
for Epson UltraChrome K3 inks 

 

QuadToneRIP is arguably the best option for making digital inkjet negatives because the tonal corrections for the process are built into the ink levels rather than using drastic correction curves applied to the digital image tones. But there are two downsides to the way QTR negatives have traditionally been created. The first is the time-consuming calibration process, which involves entering settings for the ink levels, partitioning information, and the correction curve and linearization information into a text file. To do well,  there is a minimum of four printing steps, along with measurements, manual calculations, and optional Photoshop plugins or spreadsheet tools used in the linearization process, all of which can add up to several hours to several days to produce a good negative. 

A NEW APPROACH TO QTR DIGITAL NEGATIVES

This workshop utilizes my QuadToneProfiler-QuickCurve-DN tools. This new system uses the QuadToneRIP driver, but does away with all the complexity and manual calculation typically involved in the traditional QuadToneRIP curve creation process. 

The system is based on a special set of pre-defined quad curves, a method for setting the ideal blocking density for a wide range of processes, and built-in linearization tools. 

This system is designed to remove the need for Photoshop scripts and adjustment curves, and creates perfectly smooth digital negatives for any process you want, from albumen to ziatype. 

 

What will be covered

The workshop will start with a QuadToneRIP crash course that will cover basic QTR terminology, how to install custom quad printers for keeping digital negative separate from other QTR printing, the digital negative printing workflow for both macOS and Windows, and a brief discussion about linearization. The whole idea of these tools is to remove complexity, so we will also go over the few things you can ignore when using the QuickCurve-DN system. 

Then we will work through the QuickCurve-DN curve creation method.

  • Find correct exposure for maximum black
  • Establish the needed blocking density for your process and install the initial quad curves
  • Print and measure the linearization target with workflows for different devices: photospectrometers (i1 Pro/ColorMunki/SpyderPrint),  flatbed scanners, and manual densitometers
  • Use the QuickCurve-DN’s built-in linearization tools
  • Print torture test images and confirming linearity

We will also cover some best practices for final image edits, including custom sharpening workflows for digital negatives, and soft proofing.  

All workshop attendees will receive my QuickCurve-DN application for macOS (available summer 2018) or the Excel based version for Windows, both of which include a year of free email support and updates.