Anti Aliasing Control
Advanced Anti Aliasing control has been added to Bryce 7 pro. What these controls do and how they work is not immediately apparent. Even experimentation may not lead directly to the answer. Because AA is handled slightly differently in the premium render, AA rays and AA tolerance are greyed out, otherwise what is true for the regular render will also be true for premium. In the regular render AA tolerance can have a dramatic impact on the time it takes for the AA pass to complete.