turning 4k into 35mm or 70mm

[perati]

What about turning a final 4k project into 70mm for IMAX film? Does someone know which could be the best way to do this and what we need?

Thanks

 

[michael zaletel]

Read this article about the production of the "The Dark Knight" which incorporated native 35mm and native Imax footage in both a 35mm version and an Imax version. My guess is that you would want to shoot 4K 16x9, output 4K DPX files and have IMAX run their DMR process on the DPX files.

http://www.studiodaily.com/main/searchlist/9677.html


The Imax version, however, involved a much heavier digital hand, since all the 35mm footage went through Imax’s DMR process, in 4K. With regard to the Imax shots, any one that incorporated a visual effect was created as a DI; every Imax shot without a digital effect was timed photochemically. “We take the data from the DI, perhaps that’s 2K, and we up-res it and use out proprietary algorithm to de-grain,” said Keighley. “If it’s all digital, it’s a DI, usually at 4K. Out of the 2,000 plus shots, 200 were digital effects, so those were digital. But the Imax shots without visual effects—which were a significant amount—have no digital version.”

-shooter

 

[David Taylor]

Fotokem can take CineForm files and go to 70mm (or 35mm for that matter). We're involved in an Imax project with them currently and have tested this path. If you'd like more information or a contact at Fotokem please send me an email: dtaylor at cineform dot com.

 

[perati]

What do you understand by DI? I read the article but still that process was to be done from 35mm to 70mm. But what about the process before this? Taking 4k to 35..?

 

[Mat@imageWork]

Hi you have a 4K file, you can go on IMAX. My friend just purchase the new Celco Furry, and he have the best deal. Feel free to contact me if you want: mathieub@frenchcancan.ca

 

[Michael Tiemann]

Hi you have a 4K file, you can go on IMAX. My friend just purchase the new Celco Furry, and he have the best deal.

That would be the Celco Fury (not furry).

 

[Mat@imageWork]

Just a small clarification here,

IMAX is 65mm when shoot or record to print. Print release are 70mm. Everythink is 15perf vertical.

It is possible to go from 4K DPX to IMAX 65mm neg and then 70mm print release. As said bellow, celco furry record 4K into 65mm perf at 5 sec per frame on 5245 stock. If you are doing IMAX there left and right eye, so double everything. So 1h30 movie is around 130 000 frames x 2 for both eye and at 5 sec per frame it's around 15jours of continuous recording. Ouch!

 

[Harrison Diamond]

That would only be for IMAX 3D though. Most IMAX installations are conventional 15/70 horizontal single projector.

 

[Mat@imageWork]

That would only be for IMAX 3D though. Most IMAX installations are conventional 15/70 horizontal single projector.

yes off course