Category Name: downloads

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. PDF files this size choke my CMS, so to download this file, please click this link

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

A6-StepTest.tif

posted on: December 26th, 2018

This is a cobbled-together stepwedge (also called a target by some) that is used in polymer plate calibration. It contains both a single line 21-step image that is 0-100% black in steps of 5% as well as a 51-step image in 3 rows of 17 that encompasses the same range from 0-100% black but in steps of 2%. It is used when calibrating polymer plates (or digital negatives) to refine the QuadToneRIP .quad files that are used to print the positives.

categories:  calibration, polymer photogravure, qtr, downloads  

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

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