If you have no other info than what's in the keycode burn in, you can look at how high the frame offset counts. In 4 perf the highest number is 15, in 3 perf it's 21 and 22. (In 16mm it's 20.)
You can generate the perf info (there is a column for that in the bin, if memory serves, but if there isn't you can append that as a decimal value of .1, .2 or .3 to the keycode column) like this:
In 35 mm the keynumbers occur every foot, or 16 * 4 = 64 perfs apart from the next one. In 35 3perf there is one left-over perf in each foot of film. (Because 64 / 3 = 21, and 21 * 3 = 63.) Every 3rd foot has accumulated enough perfs to make a whole frame. By convention the cadence of these short and long feet goes short (21 fr), short, long (22 fr). By the same convention, you designate the first of the short feet .1, the second short foot .2, and the long foot .3.
If you don't have that designation in the bin info, then your lists will be in-accurate by 1 frame. This inaccuracy is not a rigid offset, but is going to be potentially be different for each of the 3 phases of the cadence.
Hope this helps,
Rainer Standke
On May 23, 2011, at 11:16, Aidan O'Brien wrote:
> Hi everyone,
>
> Another one from this project I've inherited.
>
> I have mixed 3perf and 4perf material in my project, and am about to start
> pull lists for my reels.
>
> The project doesn't have perf information as part of the ALEs. Is there a
> easy way to spot the difference or am I doomed?
>
> Thanks
>
> Aidan
>
>
> [Non-text portions of this message have been removed]
>
>
>
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If you want to donate to Red Cross quake relief, you can do so through your cell phone. Text redcross to 90999 to make a $10 donation. It will be on your next cell bill.
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