Meryl Streep narrated The Living Sea (1995) HARDLY a B Actor. Hardly a B-Film.... TOTAL A-LISTER. The highest you can get. IMAX on UltraFlix will be SICK!
It was shown in ALL IMAX theaters. That is just one example
Uh - these are high-budget documentaries that were produced and shown at IMAX theaters? Not sure where you're getting your information from...
Hell, Africa: The Serengeti was narrated by James Earl Jones (Darth Vader). Hans Zimmer contributed to the films soundtrack (Academy Award Winner) if I recall correctly. And that's just one of em'.
PLUS - most of these were filmed on 65MM and 70MM film. NTEK is responsible for the encoding, re-touching, and remastering of these films. EVEN MORE REVENUE!!!!!