Tag Name: calibration

QTR polymer photogravure calibration

posted on: January 13th, 2019

BWMastery.com has created a Mac-based software tool called QuadToneProfiler-QuickCurve that enables a very streamlined linearization workflow for making digital positives for steel-backed polymer plates. This is a 20-page pdf description of that workflow.

categories:  calibration, qtr, digital positives, downloads, polymer photogravure, alternative processes   tags:  alternative process, calibration, digital positives, polymer photogravure, download

QuadToneProfiler-Quickcurve polymer calibration

posted on: January 13th, 2019

Check the downloads section for a new downloadable pdf file that covers the process of creating a linearized calibration workflow for positives used in making polymer photogravure plates. This new piece of software from BWMastery.com allows the use of QTR to create perfectly calibrated positives from which to make polymer intaglio plates.

Here is a direct link to that download page:

clayharmon.com/downloads

categories:  alternative processes, polymer photogravure, calibration, qtr   tags:  alternative process, polymer photogravure, calibration, qtr

A6-ScreenTest.tif

posted on: December 26th, 2018

This file is an image file that is useful in calculating the screen exposure time for polymer plates. Its use is described in the book Polymer Photogravure: A Step-By-Step Manual Highlighting Artists and Their Creative Practice available here. This file saves a step in that it can be used both for determining the screen exposure value for a polymer plate and also can be used for determining the upper and lower limits (Photoshop Levels) that will be used when printing the positive.

categories:  polymer photogravure, calibration, downloads, qtr   tags:  polymer photogravure, calibration, download, qtr

A6-Screentest-Template

posted on: December 26th, 2018

This is a downloadable template file that assists in making even screen exposure strips on an A6 plate during the calibration process for polymer photogravure. It is in the form of pdf that should be printed off at 100% scale on a laser printer or inkjet printer. The markings allow an opaque card to reveal additional plate material under the screen in even increments. Its use is described in the book Polymer Photogravure: A Step-By-Step Manual Highlighting Artists and Their Creative Practice available here.

categories:  alternative processes, calibration, polymer photogravure, qtr, downloads   tags:  calibration, qtr, polymer photogravure, digital positives, download

Black and White torture test

posted on: September 15th, 2014

This is a rather large tiff file used to test the smoothness of all your digital negative/positive work. In particular, the positive and negative circle gradients have a way of making ‘ramps’ in your correction curves very obvious.

categories:  alternative processes, calibration, digital negative, photography, photoshop   tags:  alternative process, calibration, digital negatives, digital positives, photoshop, tips, download

QTR profiles for palladium printing

posted on: July 17th, 2014

Quadtone RIP profiles for making digital negatives. Zip file contains profiles for making digital negatives on the Epson 1400, 2200, 2400, R3000, 3800, 3880, and 7800 printers.

categories:  alternative processes, palladium printing, qtr, digital negative   tags:  digital negatives, qtr, calibration, photoshop, platinum, palladium, printing

QuadTone RIP Digineg Tutorial

posted on: June 11th, 2014

This is a tutorial I wrote several years ago outlining the steps needed to use QuadTone RIP to create digital negatives for alternative process printing. For those who want to achieve the highest level of control over the digital negative process, the QuadTone RIP process still has no equal, albeit at the expense of a steepish learning curve. This tutorial is my attempt at creating a systematic way to use the QuadTone RIP driver for making negatives (and positives).

categories:  calibration, digital negative, photoshop, printmaking, palladium printing   tags:  calibration, digital negatives, alternative process, photoshop, palladium, printing, qtr, manual, instruction

Ike's QTR curve creation script

posted on: June 10th, 2014

This is a photoshop script written by my good friend and computer maestro David Eisenlord that painlessly creates a gray-curve-linearization Photoshop curve that can then be directly loaded into the QTR ink profile that is being built. This curve takes the headache out of thinking in ‘negative space’ during the QTR calibration process. As in, oh wait, my highlights are too dark, so that means I need to add more ink, right?

This script helps to minimize some of the mental gymnastics involved. I use it in the QTR tutorial download on my site.

categories:  digital negative, calibration, photoshop   tags:  alternative process, calibration, digital negatives, digital positives, photoshop

51-step-tablet with levels (positive)

posted on: April 21st, 2014

Standard 51 step tablet annotated with levels in addition to gray percent. Used in calibration steps for polymer photogravure.

categories:  calibration, downloads, photography, workshop   tags:  calibration, digital positives, qtr

palladium printing resources

posted on: April 21st, 2014

A pdf file containing a list of online resources for palladium printing materials.

categories:  palladium printing, photography   tags:  alternative process, calibration, chemistry, printing, palladium