645 sensor scan

[ReddBaronn]

Is the 645 camera supposed to emulate an IMAX camera or is it a separate entity?

The reason I ask is IMAX cameras spool the film through side to side. To make the sensor most like the film counterpart, the sensor should scan from side to side. Will this be how the 645 monstro works? Better yet, will it be an option?

[David Mullen ASC]

Doesn't matter much if the filmed is pulled horizontally or vertically, most of the exposure happens when the frame is held still in the gate.

When "Dark Knight" intercuts IMAX and 35mm photography, can you tell a difference in terms of motion blur due to the interaction of the spinning shutter and the horizontal vs. vertical pulldown? I didn't notice anything.

It doesn't strike me as something that needs to be emulated for an "IMAX look".

[Stephen Williams]

When "Dark Knight" intercuts IMAX and 35mm photography, can you tell a difference in terms of motion blur due to the interaction of the spinning shutter and the horizontal vs. vertical pulldown? I didn't notice anything.

It doesn't strike me as something that needs to be emulated for an "IMAX look".

Hi,

I don't notice a difference between an Arri III or a 435 either, with an Arri III the shutter is at the side of the camera & with a 435 it's at the bottom.

Stephen

[ReddBaronn]

The thing with The Dark Dnight is isnt it all printed on IMAX film? I thought I could see a difference but thats certainly going to be diminished by how it was projected.

[Gabriele Turchi]

Doesn't matter much if the filmed is pulled horizontally or vertically, most of the exposure happens when the frame is held still in the gate.

When "Dark Knight" intercuts IMAX and 35mm photography, can you tell a difference in terms of motion blur due to the interaction of the spinning shutter and the horizontal vs. vertical pulldown? I didn't notice anything.

It doesn't strike me as something that needs to be emulated for an "IMAX look".

David actually i have noticed a MASSIVE difference in terms of Motion Blur ,

In the theater actually i have not noticed that , but some days ago i have watched again the Movie (the High Def Version From Apple TV)
I have to say that all the Imax Sequence looks like if they were shoot at 60 FPS...The Motion Blur is basically zero...

Honestly , i thought that the Imax sequence were shoot at 60fps ...

PS:Do you remember our conversation about 60 fps and film projection...?

basically My question was based on that "no motion Blur Look" that i saw in the Dark Knight ...

PS:In the DVD there is all the IMAX sequence in the Original Aspect Ratio...One of those to me looks like 60 fps...(the other one looks like less blur that the usual 24fps 1/48...)

G

[chuck colburn]

I believe IMAX is a 24 f.p.s. process. Showscan (Doug Trumbuls baby) was 65mm 5 perf. shot at 60 f.p.s.

[David Mullen ASC]

I just watched the Blu-Ray on my 1080P Sony monitor with the 24P "True Cinema" function... the motion blur of the IMAX photography (which is standard 24 fps / 1/48th shutter for the most part) is the same as the 35mm footage.

They may be less post noise reduction on the IMAX shots though, but that would tend to reduce smear, not increase it.

Now on a big IMAX screen, the IMAX footage, which fills it, tends to exaggerate motion problems from the 24 fps photography, like strobing, which is why the old rule of IMAX photography is to make fewer cuts and don't move as fast. Not that "Dark Knight" followed that rule too much.

There is no "IMAX shutter look" for the 645 camera to follow, especially since right off the bat you've got the difference between a mechanical shutter and an electronic one.