How has "Dynachrome" held up?

[Osi Osgood]

I've heard of this, but I have never seen any super 8 prints on this film stock. How has it held up?

[Thomas Dafnides]

I filmed on Dynachrome standard 8mm film in the sixties. The color reversal film has not faded at all. I believe this was made by 3m.

[Brian Fretwell]

I used some Dynachrome Super 8, but as it was home processed and I haven't watched it recently I can't say how it has aged. I'm pretty sure that was 3M. The 3M Ferrania standard 8 and 35mm reversal has lasted well, both home processed.

[Osi Osgood]

How was it "home processed" ?

[Joerg Polzfusz]

Which Dynachrome are we talking about?

According to ye olde super8data, there have been three different films named „Dynachrome something“. Two of them have been made by Dynacolor in the USA, the other one was made by Ferrania in Italy. Both Dynacolor and Ferrania have been owned by 3M back then. The two Dynacolor-products are listed as Kodachrome-compatible K-11/K-12, the Ferrania-product had its own proprietary process (that was most likely Agfa- or E4/E6-compatible). Hence, they are completely different beasts.
https://www.filmkorn.org/super8data/..._dynacolor.htm

Due to the Kodachrome-compatibiliy, I would assume that the Dynacolor-products are less prone to fade, color-shifts or similar problems. Not so sure about the Ferrania-products (that also have been sold under different other brand-names in Europe and that sometimes didn’t stood the test of time).

BTW: There might have even been more Dynachrome branded S8-carts than these three.

BTW: All three films have been color reversal stocks. So they have not been used to make „prints“ (maybe except for some amateur stag films copied with some self-made optical printers). If there have been printstocks under this name, they have not been listed in the super8data, making this thread even more confusing.

[Brian Fretwell]

How was it "home processed" ?

The Standard 8 in an all powder (you had to mix it up with water yourself) 3M kit. It wa also for Ferrania CR50 slide film,. With that you could push process and to a degree change the colour balance by varying the first and colour developer times. It was used at 20C (68F) and took at least an hour and a half!!!!! You had to re-expose it to bright light after the first develper too. The later ones were in an E4 higher temperature kit with chemical re-exposure.

[Thomas Dafnides]

I have some Ferrania standard 8mm , I filmed in sixties . It was sold by Walgreens (made in Italy), I think under the Walgreens brand. This film has not faded at all. It did not have the resolution of Kodachrome but it still had its own charm with warm colors and acceptable detail.