Quote Originally Posted by Ian Grant View Post
Ilford were quite emphatic (on factory tours) that PET films can damage conventional camera wind mechanisms, and why they'd never use it again for 35mm. The films coated on PET are usually used in specialist cameras with slip clutches or other safety mechanisms that prevent damage in case of a film jam.

For this reason the major manufacturers don't normally use PET base for films made for conventional camera use.

The issue is more of stripped gears in wind mechanisms because the film doesn't break or the perforations tear. Some cameras are far more robust than others but many of the low to medium priced cameras made in the last few years don't have the build quality of similar cameras made in 70's & 80's.

Ilford's comments were because there has been damage to cameras, so it wasn't scare mongering, it lead to their rapid withdrawal of their 72ex 35mm film, so they know what they were talking about.

I was on one of the same trips to the Ilford factory and recall the discussion, which, when I was there, included the Chairman and the Sales director. There was a real concern of damage to cameras, and IIRC mention of someone like NASA having issues?

One only has to think of a over-vigorous manual winding-on when No 36 or No 72 has been reached (I've torn conventional film that way before I knew better), and you have a problem when the film stays put! Clearly Dwaynes have similar concerns...maybe overcautious, but they know their equipment, and I wouldn't be very pleased if my film were damaged because of someone else's PET film being spliced in the same reel.