[Tig] ArriScan

[percy at digitalmagic.com.hk]

Any Arri Scan use
Any in put

Thanks
Percy Fung
Hong Kong


----- Original Message ----- 
From: "Dominic Case" <cased at atlab.com.au>
To: <tig at tig.colorist.org>
Sent: Thursday, May 15, 2008 6:27 AM
Subject: Re: [Tig] uneven 5242 stock for ARRILaser magazine


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>
> Simpy reading the other side isn't enough.. Keykode readers that display
> and/or burn-in keykode numbers also need to extrapolate (or navigate by
> dead-reckoning). If the system misses a keykode does it stop burning in, 
> or
> simply go on incrementing the count? Is it intelligent enough to know when
> to decrement the count instead?
>
> Neg matching systems also have to interpolate between keykodes to identify 
> a
> specific frame, and they need to allow for the fact that the Keykode is 
> only
> 25% likely to be exactly on a frame (and calculate the 1, 2, or 3 perf
> offset in the correct direction). It's a different calculation if the
> keykodes are descending.
>
> I believe the Aaton Keylink system does all of this. I had to get my head
> around it with the Excalibur neg matching system which also extended to
> Keykode capture on telecine.
>
> I've not had to think about this for a few years now. The headache had
> almost gone away . . .
>
> _________________________________
> Dominic Case
> Atlab Australia
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