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25 fps mit 50i Kamera aufnehmen - jeden Frame erwischen !!

25 fps with 50i camera shoot - to catch every frame!



Frage von fleischverpackung:
August 2009

Hello. It's not about what you might expect after the title;)

I have an LED to a maximum of just 25 "fps" projects. It flashes in different colors. Each "frame" a different color. With a camera, I take off this blinking signal. Here, it is absolutely important that the camera recorded every different color.

http://www.vimeo.com/5513076

So far I have it with a SonyFX1 (tried, 50i). At issue is not for me being just a beamer (; 56Hz - 96Hz). The problem is that it only works for some time. Then problems occur.

Now, I wonder where this may be the problem. I imagine that the devices running through the different "Hz" at times so asynchronously that builds up the camera, the fields for a frame made of two different colors?

Have you perhaps an idea how I can work around the problem? Liegts s.Beamer, s.der Camera?

greets, the packaging
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Antwort von deti:

Synchronization, as you think of her, is not possible. To this end, it would be necessary to couple the transmit clock by PLL s.ein genlock signal and then send s.eine Genlockable on-camera.

Deti



Antwort von thos-berlin:

I do not know what it is about. I can not imagine, however, that it may cause aberrant timing and perhaps synonymous compressions to this effect.

A camera that can be synchronized accordingly, will be priced uninteresting, converted, especially since a small Elektrobastelwei sen becomes necessary, to the flashes to a genlock-capable format.

If, however, must be SOWISO craft activities, why not use the live-video output of the camera as a clock for the LEDs?

However, to me at the moment reveals not the meaning of the whole action, as the human eye, these different colored Lichtbltze not sowoso can dissolve. For a conscious Wahrnehmug must be finite element as a Picture.

No matter: If the only effect s.Beamer to, or synonymous s.Kameradisplay or a Television?








Antwort von domain:

Derived from an artistic idea http://ooe.orf.at/stories/324411/ and (the imagined video; allowed) incl Erkärung not want to be too much.
All recording and playback devices are asynchronously without genlock signals in the long run, that is only halfway through a long quartz bars parallel.
A continuing synchronization is therefore about as improbable as a football championship of the Faroe Islands.




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