David Mullen ASC
Moderator
So what exactly is the point of Open Gate? What do you mean by "Preview" since you normally can see what the camera is shooting with the monitor-out?
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Please allow greater than 180 deg shutter angle!
- Thread starter sander kamp
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Stuart English
Red Team
Open Gate
Open Gate
That's always a dilemma, whether to do such things or not. At the moment we decided to leave it to the operator.
There should be feedback via the GUI however.
For example, lets assume you have selected 24 degrees (the value is reported in white text in the GUI) and then you enable Open Gate (now the value is reported in red text)
Open Gate
That's always a dilemma, whether to do such things or not. At the moment we decided to leave it to the operator.
There should be feedback via the GUI however.
For example, lets assume you have selected 24 degrees (the value is reported in white text in the GUI) and then you enable Open Gate (now the value is reported in red text)
Stuart English
Red Team
Open Gate
Open Gate
It lets you rehearse shots and set focus at a higher frame rate than you would normally get if you were to observe a native 24 fps / 25 fps / 30 fps signal.
The sensor runs at 2x that rate so we can see 48 fps / 50 fps / 60 fps. The recording system drops every other frame so we still record 24 fps / 25 fps / 30 fps/
I only use that term to differentiate between preview / record and playback as Open Gate is disabled on playback.
Open Gate
It lets you rehearse shots and set focus at a higher frame rate than you would normally get if you were to observe a native 24 fps / 25 fps / 30 fps signal.
The sensor runs at 2x that rate so we can see 48 fps / 50 fps / 60 fps. The recording system drops every other frame so we still record 24 fps / 25 fps / 30 fps/
I only use that term to differentiate between preview / record and playback as Open Gate is disabled on playback.
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sander kamp
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Isn't that what is already happening when you dial in a greater than 180 degrees shutter speed? My point is that it was never clear to me what the reason was the number turned red. I just assumed the camera couldn't do it. The strange thing is, in VARISPEED mode the number is red as well but somehow it does work - probably because OPEN GATE is automatically turned off but the GUI isn't aware of it.
J. Eric Camp
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Part of the number turning red is:
In "Normal" mode the shutter exposure time is determined by the shutter speed setting, independent of the frame rate. So in normal mode at a 24fps 180º shutter you are setting it to a 1/48th of a second exposure per frame. Well, when you enter varispeed, and crank it up to 72fps the camera is trying to maintain a 1/48th of a second exposure time but it can't because it is impossible.
That is why it turns red.
In "Normal" mode the shutter exposure time is determined by the shutter speed setting, independent of the frame rate. So in normal mode at a 24fps 180º shutter you are setting it to a 1/48th of a second exposure per frame. Well, when you enter varispeed, and crank it up to 72fps the camera is trying to maintain a 1/48th of a second exposure time but it can't because it is impossible.
That is why it turns red.