Any digital movie camera has rolling shutter like celluloid

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winbert
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Any digital movie camera has rolling shutter like celluloid

Post by winbert » Thu Oct 13, 2011 8:31 am

I am just wondering in this today's technology, any digital movie camera works with a rolling shutter like our movie camera.

What I meant is that the digital camera that took frame by frame and later on play the frames in certain speed, e.g 24 fps?

Do you know any?

granfer
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Re: Any digital movie camera has rolling shutter like cellul

Post by granfer » Thu Oct 13, 2011 11:51 am

Yes and no, Wimbert.
MACHINE VISION cameras are designed to have a trigger input that generates ONE frame of digital video and stores it to an external computer. The software of that computer then generates the video file that presents the individual frames in sequence at the required speed.
They are used extensively in Film Transfer by amateurs and professionals using the "frame by frame " method.
See Videofred's results on this Forum.

I'm not aware of any camera that achieves all those functions in the same unit.

granfer

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Andreas Wideroe
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Re: Any digital movie camera has rolling shutter like cellul

Post by Andreas Wideroe » Thu Oct 13, 2011 12:07 pm

I guess a DSLR camera would do almost this, except a rolling shutter (more a guillotine shutter).

/Andreas
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Lunar07
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Re: Any digital movie camera has rolling shutter like cellul

Post by Lunar07 » Thu Oct 13, 2011 12:15 pm

Many DSLR's have mechanical shutters however the technology to shoot video in a digital camera with a mechanical shutter has a way to go. Sony, couple of years ago, got a DSLR out that can shoot at 10 FPS. There are difficulties. Google something like 'digital movie cameras with mechanical shutter' and you'll see what I mean. By the way, Google is your friend here ;)

Now for the second part of your question: What I meant is that the digital camera that took frame by frame and later on play the frames in certain speed, e.g 24 fps?

This is a different issue that is not related to the first part of your post. ANY digital camera that has a mechanical shutter can of course shoot a frame at a time. To play the frames at a particular speed may be a feature of a camera - this is more like playing a slide show at a particular speed. Maybe some cameras have such a feature, or maybe you can transport such pictures to a PC and using some program you can play them frame after frame. But this is a different issue from what you state at the start.
Movie making: Not yet!
Play SINGLE frames at a particular speed: Yes, but you need to find a camera with such a feature or do it on a PC.
winbert wrote:I am just wondering in this today's technology, any digital movie camera works with a rolling shutter like our movie camera.

What I meant is that the digital camera that took frame by frame and later on play the frames in certain speed, e.g 24 fps?

Do you know any?

bakanosaru
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Re: Any digital movie camera has rolling shutter like cellul

Post by bakanosaru » Thu Oct 13, 2011 2:46 pm

The Arri D-20 & D-21 both had mechanical shutters and optical viewfinders similar to those in a 35mm motion picture camera.

winbert
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Re: Any digital movie camera has rolling shutter like cellul

Post by winbert » Thu Oct 13, 2011 4:46 pm

Lunar07 wrote:Many DSLR's have mechanical shutters however the technology to shoot video in a digital camera with a mechanical shutter has a way to go. Sony, couple of years ago, got a DSLR out that can shoot at 10 FPS. There are difficulties. Google something like 'digital movie cameras with mechanical shutter' and you'll see what I mean. By the way, Google is your friend here ;)
Yes my DSL camera can take multiple frames in a second. But this feature more to take the best shoot in speedy action. When the camera is set in this feature, after taking one shoot, to process 10 frames camera needs several second to process it. I can imagine that at 24 fps technically will take an enormous speed and complicate machine to process them, and moreover, film camera is continues shooting until trigger is released.
This is a different issue that is not related to the first part of your post. ANY digital camera that has a mechanical shutter can of course shoot a frame at a time. To play the frames at a particular speed may be a feature of a camera - this is more like playing a slide show at a particular speed. Maybe some cameras have such a feature, or maybe you can transport such pictures to a PC and using some program you can play them frame after frame. But this is a different issue from what you state at the start.
Movie making: Not yet!
Play SINGLE frames at a particular speed: Yes, but you need to find a camera with such a feature or do it on a PC.
I know what you are talking. Not as single slide, but I was thinking as 24 fps as continues movement. But as I said above, it would take an enormous speed processor which I think in today's technology still no-existent.
awand wrote:I guess a DSLR camera would do almost this, except a rolling shutter (more a guillotine shutter).

/Andreas
Andreas, I think other using rolling shutter there is no any possibility a guillotine shutter can mechanically open and close 24 times in a second (or 1440 times in a minute or 86,400 times in an hour, or... etc)
bakanosaru wrote:The Arri D-20 & D-21 both had mechanical shutters and optical viewfinders similar to those in a 35mm motion picture camera.
Do these cameras open and close the shutter like I describe above or in different method? and how they process 1440 picture frame in a minute (which I believe will be more than 2 mb/frame).

I am really curious to know.

ps: and I believe if this frame by frame camera is widely available, that is the end of celluloid.

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