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== Proofs ==

If you are submitting a proof, always supply a proof of the very latest version. If possible, a 1:1 scale version of the proof should be given. If the proof is not 1:1 scale, this should be clearly marked.

Digital proofs can be divided into two groups, '''content proofs''' and '''contract proofs'''.

=== Content proof ===
The proof is produced using a printer or copier. The proof can be used to make a rough check on the accuracy of the text and colouring (“red is red”), but the colours do not correspond to the printed end product.

=== Contract proof ===
By contract proofs is meant proofs which can be used to check colour tones. The proof is made on a proofer calibrated for print quality. The validity of a contract proof must be checked by measuring a color
bar, like Fogra Media Wedge, which has been printed on the proof. The proof is acceptable, when all tolerances are passed. Equip the proof with the OK-label of an accepatable measurement.


{{{#!wiki note
'''NOTE!'''

With contract proofs the following limitations may be encountered:
 * It is not always possible to predict the influence on print quality of the paper used in the printing.
 * It is not always possible keep the final printed product identical to the proof as far as all colour tones are concerned.
 * If the digital proof technique does not produce halftone dots, moiré effects caused e.g. by difficult textile patterns might not be reproduced on the proofs.

}}}

Pruf must be valid and contain all mandatory elements according to [[https://www.iso.org/standard/66426.html|ISO 12647-7:2016]], Fogra PSO and BVDM.

 * Fogra MW 3
 * Job ticket
 * Measurement
 * Result in tolerances

In this case product will be printed according [[https://www.iso.org/standard/57833.html|ISO 12647-2:2013]]


=== Observing environments of proofs ===
The colours of contract proofs, as well print, must be examinated in standard lights D50 (5000 K).

{{{#!wiki important
'''IMPORTANT!'''

A change in lights changes also the viewing of colours in a observer’s eye. Note, that between print and proof, the change can be different due to different materials.

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