[Chip Yamada] “The DigiBeta tapes are all SD”
That is kind of redundant, there is nothing but SD DigiBeta tapes.
[Chip Yamada] “ProRes 422”
That is just a codec, what are you looking to go to, SD, 720p or 1080i or p?
If up-converting you need to set the correct cropping if you source material is 4:3, if it is anamophic 16:9 it is an easier path.