8mm Forum: Spots on the picture,. Is this cause of oxidation?

This is topic Spots on the picture,. Is this cause of oxidation? in forum 8mm Forum at 8mm Forum.

To visit this topic, use this URL:
https://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=011330

Posted by Amund Hovde (Member # 4948) on March 10, 2017, 06:11 PM:

Hello, alot of brown spots on some reels, is this because the film because of bad condition starting to oxidate and glueing/sticking together?
What cause these spots?

PICTURE : https://ibb.co/m3USwF

Thnx from Amund

Posted by Patrick Feuerstein (Member # 5293) on March 11, 2017, 04:05 AM:

The fact is that Kodak used (for Kodachrome) during a period a varnish wich deteriorated by the time. During my career I had several family home movies with that fault. There's nothing to do in a reasonable way.

Patrick Feuerstein
Film archivist-restorer (ret.)

UBB.classic^TM 6.3.1.2