Infoseite // Shutter Setting



Frage von schnittweise:


What really makes the camera, when a setting for longer shutter 1 / 50 s elect?
So, she must provide 50 fields per second. Then each field with 1 / 50 s is exposed. Right? The movements will then see synonymous of very fluid.
In the 1 / 30, it had a bit jerky, and the time is still longer, then it is even more jerky.
As for the camera then takes to the fields?
Or is the 1 / 30 s No 1 / 30 but a 1 / 25, and the camera just takes up only 25 fields per second, but then saves each picture twice:

Or how does it work?

Thanks and greetings from the Beginners

Dirk

Space


Antwort von PowerMac:

Lasted exactly three seconds this search in the forum:

http://forum.slashcam.de/slow-shutter-speed-unter-der-lupe-vt36499.html?highlight=shutter

Is that so difficult?

Space


Antwort von schnittweise:

"PowerMac" wrote: Lasted exactly three seconds this search in the forum:

http://forum.slashcam.de/slow-shutter-speed-unter-der-lupe-vt36499.html?highlight=shutter

Is that so difficult?


Thanks for the link, this only answers part of my question: Are the long exposure times, only multiple of 1 / 50 sec
If the 1 / 30 s only a relic of the NTSC and Pal-country usefully always a 1 / 25 s?

Thanks and greetings

Space


Antwort von PowerMac:

I do not understand the question. The shutter can be what he wants. Whether 112000 billion years or only 0.92234565 nanoseconds. It regulates only the time, how long shall take a Picture on the chip. The chip on each of the striking picture is read by the image intensifier and here just written in 1 / 50 seconds. So, each 1 / 50 seconds, the chip is read fresh. What makes the shutter just fall on the chip that is absolutely no preference.

Space


Antwort von zan:

"PowerMac" wrote: I do not understand the question. The shutter can be what he wants. Whether 112000 billion years or only 0.92234565 nanoseconds. It regulates only the time, how long shall take a Picture on the chip. The chip on each of the striking picture is read by the image intensifier and here just written in 1 / 50 seconds. So, each 1 / 50 seconds, the chip is read fresh. What makes the shutter just fall on the chip that is absolutely no preference.

When shutter does not match frequency and readout frequency, it could lead to beatings, I imagine. So certainly will not happen: shutter speed 1 / 49 s and Auslesefrquenz 1 / 50 sec

Space


Antwort von PowerMac:

I have no idea of electromagnetic waves. Beats but are superpositions of oscillations of similar frequency. How is that to understand here? The shutter is very similar to Aperture. It limits fooled particles / waves in quantity. An image is somewhat limited-a-Optics and onto the chip and takes it on easy. I can hardly imagine problems here ...

Space


Antwort von zan:

"PowerMac" wrote: I have no idea of electromagnetic waves. Beats but are superpositions of oscillations of similar frequency. How is that to understand here? The shutter is very similar to Aperture. It limits fooled particles / waves in quantity. An image is somewhat limited-a-Optics and onto the chip and takes it on easy. I can hardly imagine problems here ...

Hello,

First of all thank you very much. I was able to learn through your answers a lot!

The discussion is now academic: If we superimposed two different frequencies, different frequency, then it comes to beating. In our case, I would be the frequency of the machine, which exposes the images on the chip with the frequency of 50 Hz superimposed on the machine that reads the images. And then I think - as I said, now, my guess is that if one is not synchronized, can lead to beatings.
The result would then flicker of the video.
So I think that the frequency (of the letter of pictures ie the default by the shutter speed) must always be a multiple of 50 Hz.

But I would now like to take any principle debate. That would be interesting to know all times.

Greeting

Dirk

Space


Antwort von PowerMac:

So my camera shutter can each of 25.1 / s to 1/4000.1 second. Can we set it exactly always .1. This effect, I have never been able to notice ...

Space





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