thanks guys.
i tried the png seq and it was good but not perfect. the lens flares at the start went on in a more or less additive manner but the ones at the end brought in a small ammount of black.
much better than what i had though!
should i get perfect results or is this as good as it gets. it’s fine for this job but i’m interested for future reference.
out of interest i tried tiff and tga seqs. the avid brought in the alphas without converting to rt mattes but they didn’t work half as well as the png seq. any reason for this?
as i say i’m just interested for future reference.
cheers