The Water fairies hit it with everything they had and it still stuck up two fingers at them :o
I actually have 100 feet of it in the freezer; unexposed Panchromatic Negative stock (Kodak motion picture -- forget type) from the 30's. Base plus fog is about .30!
Small quantities (100ft) of surplus 35mm film is available from many companies for minimal cost. These are re-cans or "short ends".
And an article on same...not by me.
The Kodak motion picture products catalogue shows the films that are polyester or estar. Mostly print rather than neg film.
Hope this helps somemone.
Did not see the question for me : So sorry for the delay
We coat miniature and roll film on tri-acetate, sheet film on polyester :
We would never coat miniature or roll on polyester, due to the hightened
possibility of camera damage, polyester does not tear and therefore in our
opinion is not suitable for a camera film base, so we do not use it.
POLYESTER is OK for lots of other miniature applications such as aerial / surveillance
etc. etc. and its thinner so it has other advantages in certain applications
Regards Simon ILFORD Photo / HARMAN technology Limited :
I agree with you concerning the 35mm format : if it can't tear, you can damage camera. But in 120, what is the problem?
Well, what do you know? I stand corrected!
As to camera damage, never saw it in 13 years of about 1 million feet of polyester a year through precision Oxberry and Mitchell camera movements in our optical printers and film recorder.
Only damage I ever saw as a direct result of polyester was a bent film processing rack on our continuous processing machine.
But, it never hurts to be safe, I guess...
I have seen camera damage as posted here and elsewhere.
Kodak follows the same guidelines as Ilford in film base use. The only place polyester is used is in space photography where weight and film length is of concern. Kodak coated on 2 mil (0.002") support or thinner to meet NASA specs.
Not just motorized backs. Some cameras (Pentacon 6, Mamiya 6, Bronica S and S2) are known for having film advance issues or potential for stripped gears.