When you install Cineform Studio it installs the same codec used by all their other products. In the Cineform codec settings under the render settings dialogue for Vegas it shows you a few options.
Encoding Format:
You are limited to using YUV 4:2:2 with the studio version, which is basically what you want to use unless you are shooting on a camera that’s outputting RAW video files, such as the RED or Blacnkmagic camera.
Encoding Quality:
Low, Medium, High do exactly what they sound like, with varying levels of compression.
Filmscan1, Filmscan2, Keying are reference formats and what you should use if using this as an intermediate codec. They limit all compression to be virtually lossless.
The creator of Cineform said that Filmscan1 should be what you use for most projects if using this as an intermediate format.