Film-Look Shutter: 180 or 200?

180 degree shutter angle is default (shutter is open for half of the frame rate, or 1/48 when shooting 24p). 200 or more increases motion blur. 180 or less decreases motion blur and gives a more stacatto look. In low budget work, shutter angle is your best friend. When the light source is low, increasing shutter angle will increase the amount of time the shutter is open thus increasing the amount of light that reaches the film/sensor.

I have a low light setting that uses 350 degree shutter.
I have a motion blur setting that uses 220 degree shutter.
I have a stacatto setting that uses 100 degree shutter.

Generally, I keep the shutter angle between 160 and 220.


Jason
 
AwakenedFilms said:
I have a low light setting that uses 350 degree shutter.
I have a motion blur setting that uses 220 degree shutter.
I have a stacatto setting that uses 100 degree shutter....
Click to expand...

So if you're shooting at 24fps, then the shutter speeds would be:
1/25 at 350 degree shutter
1/39 at 220 degree shutter
1/86 at 100 degree shutter

I just want to make sure I've got this right... thanks.
 
how exactly do you change the shutter angle on the hvx? Is that the shutter speed controls above the audio controls?
 
Changing the shutter angle on the HVX is done in the under menu/scene file/synchro scan. You must be in film cam mode to adjust shutter speed using the 'degree of shutter angle' calculation, other wise in video cam mode, it will be expressed as a fraction of a second.

As for the calculation of Shutter Angle expressed as a fraction:

shutter speed = 1 / [ (360/shutter angle) * frame rate ].

Jonathan you are right:
350 is approximately 1/25
220 is approximately 1/40
100 is approximately 1/87

When you change from film cam mode to video cam mode, the shutter angle will not be the same as the shutter speed expressed in degrees. The operator needs to take this into account and set the shutter speed based on the frame rate.


Jason
 
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