Variable Shutter Angle?

B

billy fattey

Active member
This might seem like a stupid question. Will the Red One have a physical shutter or electronic? If it's electronic what are the limits of the "shutter angle"? For instance can we shoot 24 fps with 1/100-of-a-second frames (Saving Private Ryan roughly) or 24 fps with 1/30-of-a-second frames for a real blurry dreamy effect?
 
RED Shutter

RED Shutter

I think that there has been a thread on this too, but in any case ...

RED provides a Digital Cinema Shutter which emulates the action of a mechanical shutter on a film based motion picture camera. Unlike a mechanical shutter there are no physical limitations how "wide" or "narrow" the shutter angle (speed) can be, so the bottom line is your'e covered.
 
Stuart English said:
RED provides a Digital Cinema Shutter which emulates the action of a mechanical shutter on a film based motion picture camera. Unlike a mechanical shutter there are no physical limitations how "wide" or "narrow" the shutter angle (speed) can be, so the bottom line is your'e covered.
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Can it do 'global' shuttering, another word, all the pixels shut simultaneously instead of rolling-in or line by line?
 
Nick_Shaw said:
Probably best not to repeat it all here!
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Thanks for the link Nick. Sorry because I'm new here, but are you the moderator and decide what we should discuss or not?
 
No, not at all. I'm just an ordinary reader/contributor.

It's not for me to say what can be discussed. However I was really posting the link to save Stuart and Jim from having to answer questions they have already answered.

Nick
 
Jim, you've mentioned in dvinfo.net that rolling shutter 'tears' or the object have some tilting. Since most pro DSLR digital cameras also uses mechanical vertical shutter, then wouldn't it be true that the images it captured a bit of tilting too?
 
Jannard from DVInfo said:
Did you ever take a Canon 1D MKII and shoot a variety of shutter speeds while whipping around the camera at 8 fps? I would expect that our images will be similar to that in a still extraction from a sequence. But don't assume that there are no motion artifacts whatsoever from the best digital still cameras........
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I suppose in this case 'motion artifact' meant that the image have a little 'tearing' or tilting?
 
Tearing (Skewing) caused by a shutter blade

Tearing (Skewing) caused by a shutter blade

Yes its not really shutter induced tearing - its image tilting or skew.

You don't normally see it in a DLSR, as any objects you shoot with a slow shutter - such as 1/48th sec - are typically not moving. In motion pictures they usually are. But if you significantly increase the shutter speed then objects have no time to move, if objects move towards you they don't skew.

The amount of skewing when shooting at 24fps and 1/48th sec shutter with RED will be consistant with that from a mechanical shutter in a film based motion picture camera. Hence the "look" of our Electronic Cinema Shutter and a film camera shutter are very similar.
 
Stuart English said:
Yes its not really shutter induced tearing - its image tilting or skew.

You don't normally see it in a DLSR, as any objects you shoot with a slow shutter - such as 1/48th sec - are typically not moving. In motion pictures they usually are. But if you significantly increase the shutter speed then objects have no time to move, if objects move towards you they don't skew.

The amount of skewing when shooting at 24fps and 1/48th sec shutter with RED will be consistant with that from a mechanical shutter in a film based motion picture camera. Hence the "look" of our Electronic Cinema Shutter and a film camera shutter are very similar.
Click to expand...
Thank you. So even in the pro-DSLR still cam' (such as 1Ds or D2x), there's a bit of skewing or tilting if I'm capturing fast moving object (@ 80th second)?
 
You don't usually see it with a DSLR, as you're rarely panning as you take a shot, or if you do it's panning with the subject eg somebody running on a sports field, and you have a long lens and a fast shutter speed, so the that skewing of the the de-focused background is negligible, or hard to see.

NIck
 
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