I'm very skeptical that a well-done platinum and a comparable inkjet are actually indistinguishable. Maybe one method can mimic the other, or be suitable to similar subject matter, or be equally pleasing, but they arrive at that point in such a different manner
that certain subtleties must be impossible to optimize one versus the other. Similarly, I've
made silver prints that resemble carbon, and carbon printers have made prints resembling
silver gelatin, but there are certain visual distinctions which remain proprietary, esp to
someone experienced enough to recognize such nuances.
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