IMAX movie

We've seen the movie. Quite enjoyable.

Pop Mechanics

IMAX cameras shoot in 70 mm film—twice the size of traditional film stock. Because of this, the camera only holds 3 minutes of film, which required the filmmakers to return to the surface—in some cases from a depth of 155 ft—change the film, and then go back down to the ocean floor. "When you're waiting for animals to do things," Hall says, "and the camera's operating cost is nearly $60 per second, and then it runs out of film just before the action happens, it can be a bit frustrating and enormously expensive."

First thought, "twice the size"....70 mm.... It what way dimensionally is it twice the size. Area? For 15 years I tried to find something that was 35mm on my 35mm film camera.

Second thought, "...3 minutes of film..." Man, they ought to go digital. Film is so '90s. Externally housed hard drives with wet connectors. Just swap them out on the dive.

We've seen the movie. Quite enjoyable.

 

Pop Mechanics

 

First thought, "twice the size"....70 mm.... It what way dimensionally is it twice the size. Area? For 15 years I tried to find something that was 35mm on my 35mm film camera.

 

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It's the width of the film, not the image size. Movie folks shoot across it, stills folks shoot along it. There are 2 different 35mm standards I think, a "standard" 35mm with an analogue sound stripe running along it, and super 35mm that uses the space reserved for the sound to record image instead. So the capture sizes are:

"Standard 35" is 21.95 mm × 16.00 mm

"Super 35" is 24.89 mm × 18.66 mm

Stills are of course 24mmx36mm

70mm is "like" sprocketed 120 film, and again they shoot across it. The standard capture size of 70mm is 52.48 by 23.01 mm

So you can see that lens depth of field effects on 35mm movie are akin to cropped sensor Dslr. That's why the movie guys are wetting themselves over the 5dmkii possibilities lens-wise, it looks more like 70mm than 35mm to them.

IMAX filmed their latest underwater film on the Stardancer in PNG. They had to build a special hoist on davits on the rear deck to raise and lower the huge monsters. I don't know how they handle those things in currents.