Will Krupp
Senior HTF Member
I'm assuming that registration is the overall process of aligning, flashing and printing the two-or-three color negatives?
Just to jump in for a minute, old nitrate film stock has a tendency to shrink over the years and you may have seen it manifest itself in old black and white movies as "gate weave" where the image seems to weave back and forth on screen. The issue here is that no two nitrate negatives shrink in exactly the same way or at exactly the same speed so, when dealing with the three separate negatives of three-strip Technicolor, it can become a challenge in modern times to align the three images perfectly since the basic geometry of each has changed over time. "Registration," as we refer to it today, usually always refers to the alignment of three-strip negatives since both Two-color Technicolor and Successive Exposure Technicolor (as in most animation) used single negatives. There is still shrinkage in those cases, but all of the color information is located on the same strip of negative so the alignment, or registration, of colors is not usually an issue. I'm sure there are some cases where that's not true but that should give you a general idea of the term.
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