Sind die Lichter, unter Umständen gar bis zu den Mitteltönen ausgefressen, dann war die Tonung zu kurz um dem Abzug höchstmöglichen Schutz vor Umwelteinflüssen zu geben.
Aber immerhin hat sich dann auch in den Lichtern schon eine leichte Membran um das Silberkorn gelegt.
Man spricht in solchen Fällen von einer " Verborgenen Selentonung ".
www.moersch-photochemie.deIf the highlights – maybe even down to the mid tones – appear worn out, toning was too short to give the print maximum protection from the environment.
However, in the highlights as well, a small membrane will have been created around the silver grain.
This is called " hidden selenium toning ".
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