200º Shutter

evinsky

evinsky

Well-known member
When I was at Cinegear a few weekends ago one of the techs at the Panasonic booth told me that they recomend shooting the Varicam with a 210º-220º shutter to get the most film like image and reduce the slight flutter or strobing that sometimes seems more noticeable on 24P video. Something to do with film's rotating shutter Vs. 24Ps single full frame capture. Anyway I decided to try the same thing with the HVX and I think he's right. Although 200º seems about right to me on the HVX. This also gives you a 1/4 stop sensitivity boost which is welcome.

It's subtle and you would never see it on a web download so I encourage all of you to try it and tell me what you think.

E.:Drogar-BigGrin(DBG)
 
Thanks. I'm in the middle of a productions on 24. I did that on 180degrees. Interviews I did on 280 to get more light(interior). I think you don't see that because interviews are static (no movement).
Do you think it will be a big visual differance going to 200 now?
 
Sounds really intresting, i have ben out in the wood and tried to pan in different recording format since i thought 720 25pn was abit strobing. Hope this make it smother. Also is there a difference betwen 720 25p vs 720 25pn. I think 720 25 looks more less strobing in panning but maby its just in my mind?
 
Hoping this would be an appropriate question for this thread but --- what is the difference between shutter angle (or degree) and shutter speed? I understand shutter speed but am confused about shutter degree.
 
the book is free with it if no one ever explains the difference! sorry i couldnt be of more help about it though.
 
One is a function of how wide the angle of light acceptance is, and the other relates more to the length of time (duration) that it's open.

someone pls correct me if this isn't entirely accurate.


dmc
 
Here goes what I know about it:
Degrees comes from cine cameras, those cameras have a rotary double blade shutter (in some, a pair of halved disks) those halves disks overlaps to produce an angled slot between them (under your control), that angle is measured in degrees and interacts with exposure in terms that a little angle permits less light AND VICE VERSA, in to the film's surface, so a big slot, more light, minor aperture AND VICE VERSA, other effects is that a little slot, passes more rapid in front of film gate, so the action is captured less blurred, AND VICE VERSA. (standard is 180º as I know)
In the other hand, shutter comes from CCD's sensitivity and camera's circuits ability (some times limited) to control that, in terms of speed, it's more (to me) like a photo camera's shooter, and the measure (as I understand) is in terms of time (thousands?) of second, so 2000 means 2 thousands of a second.

PS I'm empiric and have no academic foundation on my knowledge, it comes from my own experience (35 years working on cinema and TV, from scratch). I apologize if some of my appreciations are not easy to catch.
 
Cynic821 said:
this might help a little bit in the meantime:

http://en.wikipedia.org/wiki/Shutter_angle
Click to expand...


wow!!! how clever you are! the fastest wikipedier of town!
It took me about 3 minutes (with spell check , I'm spanish speaker) to wrote my statement!!!

but that's what I was talking about rotary double blade shutter, and about empiricism too; Thanks Cynic821.

:dankk2:
 
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