Evaluate - Proof Evaluation

Evaluation of Proof Measurement Data

Evaluate – Proof Evaluation

Evaluate can be used to check whether the proof measurement data from a media wedge fulfills the requirements for a contract proof according to ISO 12647-7 or a validation print according to ISO 12647-8. A fully-detailed report can be created with a pass/fail indicator.

Note: The Proof Evaluate tool supports all color spaces including Multicolor and spot colors. It is a powerful addition to the proofing feature introduced in ZePrA 8, as it allows you to use the reference files of the dynamic media wedges created by ZePrA for proof evaluation.

The Evaluation tab immediately shows the categories related to the chosen standard, the deltas to the reference, and a score with either a ✓ (passed) or an ✕(failed).

An overall score indicates if the proof has passed or failed.

There are two ways of selecting your reference:  

  • Choose reference data: This drop-down menu contains all data loaded under Data Sets that fit the selected proof measurement data as a reference, which means the number of patches and the color space must match. Select the reference that you want to compare with the selected media wedge measurement data. If dynamic media wedges were used in ZePrA, the corresponding reference data can be used for the proof evaluation in ColorAnt.

    Using reference data from ZePrA:
    1. Open the reference file of the ZePrA configuration in ColorAnt. It is located in ZePrA’s Report folder of the corresponding queue.
    2. Select Measure to measure the media wedge in the proof printout
    3. Open the resulting measurement file and click the Evaluate button.
    4. Select the original reference file from ZePrA under Choose reference data in the Proof Evaluation window.
     
  • Choose reference ICC profile: This drop-down menu contains all ICC profiles that fit the selected proof measurement data as reference in terms of the same color space. Choose the reference ICC profile that you want to compare with the selected media wedge measurement data.
    Note: The ICC profile is used to create virtual reference values. Depending on the accuracy of the ICC profile, the quality of the reference data can vary from very exact (e.g. CMYK profiles created by CoPrA) to less exact (e.g. small Multicolor profiles).  

Evaluation method: Select a method to either evaluate a Contract Proof according to the ISO 12647-7 standard or a Validation Print according to the ISO 12647-8 standard.

ISO 12647-7: For the evaluation of a binding contract proof use this method. 

ISO 12647-8: Checks the conformance of printing systems that produces a hard-copy validation print, directly from digital data, which is intended to simulate the expected appearance of material printed per a characterized printing condition.

Note: Recently, other visualizations of the final printed product have found a place in the printing/proofing workflow because designers and print buyers prefer not to go to the expense of using an ISO 12647-7 compliant contract proof any earlier in the process than necessary. In many situations, participants in the workflow require a hardcopy visual reference of lesser quality than a contract proof. In the past, those prints varied widely in quality and were often referred to as design proofs, concept proofs, layout prints, etc. That quality level is here being referred to as a validation print.

Report

The available input fields depend on the selected Evaluation method. Enter the required information according to the selected ISO standard.

Save Report: Choose the file location and the format for the report (PDF, HTML, XML).

The report contains all the information that you have entered, the summary from the evaluation dialog, a list of all patches with their names or IDs, the device color space, the Lab reference values, the Lab measurement value and the delta.

Video Tutorial

How to Use the Proof Evaluation Tool in ColorAnt in combination with ZePrA

Learn step-by-step how to use the Proof Evaluation tool in ColorAnt for the evaluation of a proofing media wedge created with ZePrA. In this example, we will be demonstrating the special feature of ZePrA to create a dynamic media wedge using process and spot colors and how to use the supplied reference data from ZePrA for evaluation of a Contract Proof.