miércoles, 1 de septiembre de 2021

AT LAST!!!, POLYESTER BASE FOR KODAK PHOTOGRAPHIC FILMS, STARTING WITH KODAK PORTRA 800

In the motion film exhibition industry, from 90´s,  film base is made of polyester, far superior to triacetate of cellulose, as it maintains its qualities unchanged for centuries, if not millennia. Triacetate, when it is poorly washed, or if it is stored in inappropriate places (with heat, humidity or, simply, in a hermetically sealed box), can develop the much dreaded vinegar syndrome. In contrast, polyester is immune to this degradation. In addition, polyester is stronger, thinner and more transparent. Fujifilm made polyester base standard in 1965 for its Single-8 format. Polyester is also resistant to fungi.

Now, finally, Kodak takes a step forward, and begins to replace the triacetate base of photographic negatives, from triacetate to polyester, starting with one of my favorite films, the Kodak Portra 800, in 35 mm loads of 36 exposures (previously, Porta 800 was available in polyester base for 24 x 36 mm or 120 format only in big rolls).

Let's hope that soon the Kodak Ektachrome, reversal film (for slides), will also benefit from this improvement, very important, since the labs usually return the slides in hermetic boxes.



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