”... he printed the proofs on canvas even though I ordered prints on paper; he said the canvas to canvas is more accurate than a proof from canvas to paper." –Randel
What you have been told could not be further from the truth. This is the sort of comment that adds to the confusion that exists about the process. Proofing must only be done on the media (substrate) planned for your final prints. It is logical; how can anything be accurately judged when viewed on a different surface? One example why is that a printed image on fine art paper is matte, where as the canvas surface has a reflective quality. Specific adjustments and tweaks are made during proofing according to the final media.
NOTE: Another thing to avoid is media commonly referred to as 'Proofing Paper', It presents the same problems as described above.
SOLUTION: Do not accept the proof if it is not on the media you are ordering.
