From: Ken Paul Rosenthal (email suppressed)
Date: Wed Oct 22 2008 - 08:41:16 PDT
It's been 7 or 8 years since I've mastered to an optical negative from a Pro Tools session, and I don't have the specific parameters right in front of me. I can check my notes from my past projects later today if you shoot me another email.
But in the meantime, I'd like to mention that NT Audio in Santa Monica was indispensable in terms of their knowledge and assistance. There's no need to go to mag, if you're already working with your sound digitally. For several projects, I cut my sound in Pro Tools, then output the session to a disc for the folks at NT, and they'd give me an optical negative.
I always made sure to consult with them re the frequency/eq levels at the bottom and ceiling in order to account for the 'loss' of moving from digital to analog (optical) sound. A good sound mixer will create a pre- and post-optical neg mix as a preview as your digital cut will not reflect what is heard through theatre speakers.
Check in with the folks at NT Audio. They're top-notch.
Btw, if you know Gibbs Chapman in SF, he's also very knowledgeable about this area.
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