7D 24fps RAW theory

J

_JD_

Well-known member
There are probably major holes to my thinking and this might be totally unfeasible, but I thought I would throw it out there anyway(probably already has been by now).

Okay, so the 7D shoots RAW stills at 8fps. So you get three 7D's and assemble them in an array (be it triangular, two base-to-base and a third above one of the others, whatever works), produce a system of mirrors so that all three cameras have the same field of view (seems very difficult to me but maybe someone smarter than I am knows a way). Current 3D capture has a slightly different FOV for the two capture cameras, so maybe a third is feasible?

Anyway, so you figure out a way to stagger each frame that each 7D shoots so that each is shooting at 8fps burst x3 cameras= 24fps RAW film. Obviously the cameras would have to be synchronized so that camera B triggers a frame right after camera A and then Camera C fires after camera B. Then there would have to be an editing system that could swallow all the RAW stills and assemble them in a 24P timeframe. Theoretically for about $8-10K you could be shooting 24P RAW. Yes, no? I'm going to have a beer.
 
Yeah that's an interesting thread. But this method would create real 24FPS video- not using a "fill in the gaps" program like Twixor.
 
Can't possibly work. A) the "8fps" is just a vague ballpark and the camera will slow down as the card fills up, throwing your whole sequence out of sync. B) your sequence would never have been in sync in the first place, because there's no way to genlock the cameras together. And c) it'd be clicking and clacking so loudly that there'd be no possibility of recording audio.
 
Theoretically it might be possible. I have seen HDR footage shot with 2 5dmkII's through a prism so that each camera has exactly the same field of view. You'd think that if they can split the image into two, they can also split it into three with a similar system.

I've also seen Matrix-style time-freeze clips shot with 50 synchronised 7d's shooting stills - so it's obviously possible to syncronise them, but I'm not sure if that means you can also offest them each by 1/24th of a second.

My guess is that by the time you engineer all the required equipment (prism, rack-mount) and add in the cost of a laptop for tethering, you'd almost be into the RED ballpark pricewise, which kind of defeats the purpose.
 
Sounds like an awful big pain in the butt for something that isn't likly to work. I think if I'd rather just rent an actual camera that can shoot RAW then go through the amazing set of conditions it would take to even attempt such an experiment.
 
DavidBeier said:
Sounds like an awful big pain in the butt for something that isn't likly to work. I think if I'd rather just rent an actual camera that can shoot RAW then go through the amazing set of conditions it would take to even attempt such an experiment.
Click to expand...

Exactly. You might be able to make the 7D setup work, but realistically you'll waste more time and money than if you just bought a RED.
 
not possible, it wouldnt be synchronized and there would be gaps like missing frames and movement would be choppy cause there is no way to tell the camera so precisely to take a pictures.
 
+1 re: noise. It would be noisy as hell. Just saying. If you needed to record location sound while you were at it...forget that right away. You'd also kill that camera + shutterpretty fast if you did it for extended periods of time.

That said I can see how it could be useful for certain shots/sequences -- exterior establishing shot sort of work, but then 8fps + Twixtor would probably work fine for those situations and might not be a bad idea if you need a wide, detailed shot of something that isn't moving too much where moire/aliasing might be a problem in video mode.
 
Read that thread this has been discussed before. I was part of that experiment at the end.

I can tell you it won't work because in addition to what everyone said above the more detail you have in your image the more the frame rate will slow down. The camera will mulitburst slower on high detailed images.
 
I still think it's a bad idea, but the new sony A77 takes 12fps which would make this a lot easier (but still deep in the "no way that's going to work" territory)
 
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