Shutterless option? 1/24 not enough

[JD Holloway]

Quick question.
Can RED effectively go "shutterless"?
I have a project that would benefit from this.

How about frame addition?

J.

[Deanan]

At 24fps that's essentially what 1/24th is. Until we have the flux capacitor upgrade board...

[JD Holloway]

Ok so no "shutter off" option.
It "is" off technically

Thanks Deanan.

Hopefully flux cap board will incorporate Memristors for instant start up!

[Martin Weiss]

Just a theoretical question: Couldn't it be possible to get a 720 degree shutter by adding half of the previous and next frame's exposure?

Would that be feasible?

I am trying to figure out in my head what it would look like in motion.

[Brandon Fraley]

Originally Posted by Martin Weiss

Just a theoretical question: Couldn't it be possible to get a 720 degree shutter by adding half of the previous and next frame's exposure?

Would that be feasible?

I am trying to figure out in my head what it would look like in motion.

thinking about it is making my head hurt, but I'd assume that would be impossible. at 24 frames a second, 1/24 means open all the time, right? and how would you incorporate the NEXT frame when it hasn't happened yet?

I do think it would be cool to have longer shutter options for timelaps stuff though.

[Andrew Walker]

I want the shutter to be open way longer than 1/24. Like anywhere from 1/2 sec to 10 sec. Now that would be great.

[Carl Larsen]

I bet they can make it can happen in camera - similar to the EX1's slow shutter frame accumulation mode, but the result is very stacatto for anything but timelapse work. It is, however, very cool for timelapses! Streaky cars, star lapses, etc.

[Nils Ruinet]

But Deanan, if you're doing timelapse shots, can you use a longer shutter than 1/24th ?
Like 1 second for example ?
Will that be possible in the future ?

Nils.

[Martin Weiss]

Originally Posted by Brandon

how would you incorporate the NEXT frame when it hasn't happened yet?

Since it's all digital, couldn't you write it to a local buffer and then write it once it has happened? They can delay the Chinese Olympic games by a couple of seconds, so you could surely delay one frame inside a Red.

So, frame 1 would be underexposed, frame 2 would consist of 50% from frame 1, 100% from frame 2 and 50% from frame 3 - once that is ready. Frame 3 again would take 50% from the buffered frame 2, 100% from frame 3 and 50% from frame 4. Now Frame 2 could be written to the CF.
And so on. Once you push the stop button, one last frame is written to the CF.

Or like this:
Buffer 1: Frame 1
Buffer 2: Frame 2
Buffer 3: Frame 3
Write Frame 1 with 50% Buffer 1, 100% Buffer 2, 50% Buffer 3
Buffer 1: Frame 4
Write Frame 2 with 50% Buffer 2, 100% Buffer 3, 50% Buffer 1
Buffer 2: Frame 5
Write Frame 3 with 50% Buffer 3, 100% Buffer 1, 50% Buffer 2
...
...
...
Buffer 1: Frame 4783
Buffer 2: Frame 4784
Buffer 3: Frame 4785
-push stop-
Write frame 4783 with 50% Buffer 1, 100% Buffer 2, 50% Buffer 3
Buffer 1: Frame 4786
Write Frame 4784 with 50% Buffer 2, 100% Buffer 3, 50% Buffer 1



As said, this is all theoretical. (But shouldn't it be possible to try this out when shooting with 48 frames, and then adding them in post into a 24 frame project?) But I think it might be worth exploring; maybe a way to go beyond the ISO 1000/3200 - or maybe just to get a new "cool" effect for pop promos.

[Dan Hudgins]

Originally Posted by Martin Weiss

But I think it might be worth exploring; maybe a way to go beyond the ISO 1000/3200 - or maybe just to get a new "cool" effect for pop promos.

I have been thinking of adding 50+100+50% (25%+50%+25% to total 100% in the result frame) and some other filters for low light, but do not have that in yet, might be better to shape the 50s with more in the dark areas.

Right now you can do a 33%+33%+33% with my FUSE option of the Kinema Insert command, if you duplicate the input frame set and offset starting one group on frame 1, another on 2, and another on 3 (making up the lost frames at the end with dups). Then tell the FUSE command there are 3 tricolor frames in the group to fuse.

You may need to use a macro to do the file shuffling and renaming to get the input set right. You might be able to shift the gamma of the three sets of the same files to give the "middle" file more of a share of the output.

If someone wants to try this let me know by PM.