All IMAX
A few things you need to know about the 15/70 film format
As stated by the guide: “The vast amount of information in a 15/70 film frame creates unique challenges for filmmakers. Here are some of the ways 15/70 filmmaking differs from smaller formats”:
It’s unforgiving. Just as 15/70 technology magnifies the power of a good shot, it exaggerates flaws. You can’t cheat on backgrounds, costumes, or make mistakes as you can in other formats. Something even a little bit out of focus looks really terrible.
It’s expensive. (Not since you were at film school will the cost of stock have had such an impact on your budget.) You will shoot fewer takes. Raw stock is like gold. Stock, processing, and postproduction are complex and costly.
Everything is bigger and heavier, which imposes logistical burdens on the crew. A 2D IMAX camera weighs from 45-95 pounds, 275 pounds if you use a blimp. That means if wildlife shows up, you can’t grab a camera and follow it as you can with video or 16mm. The 3D IMAX camera is the size of a hotel mini-bar refrigerator and weighs 230 pounds.