8mm Forum: Kodak Long Life Stock

»	8mm Forum » General Yak » Kodak Long Life Stock

UBBFriend: Email this page to someone!

Author

Topic: Kodak Long Life Stock

Robert Crewdson
Phenomenal Film Handler

Posts: 1031
From: UK
Registered: Jun 2013

posted May 18, 2018 06:51 AM

I came across an article in 'The New Scientist' for February, 1981, which mentions a filmstock introduced by Kodak in 1979 called Eastmancolor LF. The LF standing for long life. Kodak predicted that a noticeable loss of Cyan would not occur within 500 years if stored at low temperature. The 'New Scientist' commented 'Unfortunately no one can be sure that the accelerated aging tests conducted by Kodak will hold good in real time over hundreds of years. Kodak replied in answer to comments from Martin Scorsese about fading that they made several different types of Eastman stock and 'If film makers like Scorsese use the correct film for the job in hand, and store it as recommemded, a colour image can last thousands of years without any noticable fading'.

Eastmancolor LF flm was discontinued in 1982 after only 3 years, and another version, LFSP was discontinued in 1983. I wonder why?

| IP: Logged

Osi Osgood
Film God

Posts: 10204
From: Mountian Home, ID.
Registered: Jul 2005

posted May 18, 2018 11:05 AM

Well, either one of two reasons ...

1. Too expensive to manufacture for constant use.
2. Maybe they found that it was already fading! [Eek!]

... nd then, came L.P.P. [Big Grin]

--------------------
"All these moments will be lost in time, just like ... tears, in the rain. "

| IP: Logged

Robert Crewdson
Phenomenal Film Handler

Posts: 1031
From: UK
Registered: Jun 2013

posted May 18, 2018 12:32 PM

Possibly too expensive Osi.

| IP: Logged

Brian Fretwell
Phenomenal Film Handler

Posts: 1785
From: London, UK
Registered: Jun 2014

posted May 18, 2018 02:42 PM

Also it could be due to changes in development processes to higher temperatures etc meaning that LPP was easier/quicker to develop or even the introduction of T-grain. Though I am not sure when any changes were made, the 80's did involve more automation to many procedures.

[ May 19, 2018, 09:31 AM: Message edited by: Brian Fretwell ]

| IP: Logged

Osi Osgood
Film God

Posts: 10204
From: Mountian Home, ID.
Registered: Jul 2005

posted May 19, 2018 12:01 PM

Gee, I just heard of something that I don't recall hearing before ...

what is "T" grain?

--------------------
"All these moments will be lost in time, just like ... tears, in the rain. "

| IP: Logged

Brian Fretwell
Phenomenal Film Handler

Posts: 1785
From: London, UK
Registered: Jun 2014

posted May 22, 2018 05:18 PM

It was a way of increasing sensitivity with decreased grain size. I believe the photosensitive particles had a T shape with greater depth so that light would hit the side more for exposure but not be larger in diameter thus making the grain less noticeable.

| IP: Logged

Osi Osgood
Film God

Posts: 10204
From: Mountian Home, ID.
Registered: Jul 2005

posted May 23, 2018 11:52 AM

Wow!

I was hoping to hear from someone who understood that! I'm bettin that the "T" grain film stock would have potentially had an almost 16MM look to super 8 ...

... but just imagine what that film stock would have looked like for 35MM or, (WOW) 70MM!!!

--------------------
"All these moments will be lost in time, just like ... tears, in the rain. "

| IP: Logged

Bill Brandenstein
Phenomenal Film Handler

Posts: 1632
From: California
Registered: Aug 2007

posted May 23, 2018 01:14 PM

I think your later Kodak stocks all used T-grain technology. Can anyone confirm this?

Think about the sharpest Super 8 reduction prints on low-fade stock. T-grain would explain some of that quality.

| IP: Logged

All times are Central

Printer-friendly view of this topic

UBB.classic^TM 6.3.1.2