Ah, if it was done on a shadow then that explains some of the issues I am seeing.
CA stands for Chromatic Abberation (if my spelling is off, forgive me, I have a newborn that wakes every 45mins this week and my brain is custard).
The dynamic range would be crushed somewhat on a Shadow with an IB print, which is what I am seeing here. It is lovely to know that a good IB print still exists, I wish I could get my hands on it to scan it!
As for recovering the 16mm print I am scanning now, Reel 1 is pretty much a lost cause as far as recovering colour goes, the Cyan and Yellow have faded too far, but there is a lot of detail left in the magenta. It is possible to take another source, say the VHS tape, and align the capture perfectly with it, using something like Elastix. You can then use the colour information from that other source to help restore the film with pretty good results.
Reel 2 and 3 hold a lot of promise for being able to recover the colour that still exists in the print. BTW Zip Doodah, I sent you a PM :) and thanks so much for letting us know an IB print was scanned, that is the best news I'd heard in ages.
Cheers
-Pete