200º Shutter

[Endless_Static_Sea]

time is not necessarily in thousandths. A shutter speed of 10 would read "one tenth of a second" and write "1/10 sec.", meaning that if you divided a second into 10 parts, the shutter would be open for one part, then close. 500 would read "one five hundredth of a second" and write "1/500" and so on...

 

[Endless_Static_Sea]

thats weird that the shutter degree measures how much the shutter is open. Isn't that like having two apertures?

 

[dregenthal]

aperture relates to your iris opening--how much light can pass through.
Shutter determines the duration of time it can pass through--time.
I see your point, as they (or the result is) inexorably linked.

 

[erniediaz]

aperture relates to your iris opening--how much light can pass through.
Shutter determines the duration of time it can pass through--time.
I see your point, as they (or the result is) inexorably linked.

Yep!

There are three factors that affects exposure (mainly):

In Video and digital cinema: (24 FPS)
Aperture (iris) Wich is used to determine more or less light in to CCD's (and deep of field)
Shutter (Time) Wich can be used to sync Fluo ligth, Tv sets and monitors.
And shutter opening (Time also) Wich can be used to determine more or less light in to CCD's also

In cinema:
Aperture (iris) Wich is used to determine more or less light in to Film (and deep of field)
Shutter opening (Time)Wich can be used to determine sharpness or blurriness
Film sensitivity

Setting those adjustments to your needs is a combination of them.

 

[telebay]

Okay... so how do you change the degree setting on the HVX?

 

[Jon Oskar]

Yes how do you set the camera up to do 200 degree SA?

 

[THoff]

In the Scene File menu, like most everything else.

 

[Opcode]

To be more specific, in the scene file menu change the Sychro Scan setting to the desired shutter angle. Then on the camera controls, turn the shutter button on to enable the shutter settings, and increment the shutter selection until the synchro scan is enabled and your shutter angle comes up.

 

[AshG]

The 200 degree shutter covers up a lot of "illegal" movements and can smooth out motion. In some cases, it becomes too smooth. Be sure you check it on your particular scene or shoot, it is not better for everything.



ash =o)

 

[bosindy]

Ash,

What are some of the pitfalls?

 

[Cynic821]

it would depend on your scene i would guess BOSINDY.

Try it out and see how it looks for yourself, but that my guess. Thanks for the TIP TC!

 

[AshG]

Ash,

What are some of the pitfalls?

Shutter adjustments cannot really be fixed in post if you decide you dont like it later. The only real downfall is if you were shooting action footage that came out with too much motion blur. For me, this is entirely situational. If I am using the lens long with a more shallow focus I prefer 180. I always prefer 180 for lock down stuff as well. I only use 200 or 210 when I want to make moves a little faster than you technically should or often when I go handheld...



ash =o)

 

[davetronic]

1 more very basic question on this. Do the shutter adjustments (1/48, 1/60, etc) work in conjunction with the shutter angle (180.0, 200.0) when in film cam mode - or are they just different ways of measuring the same thing (1 for video, 1 for film). In Barry's book, it reads as if the film cam mode operates exactly like a film camera, meaning that the shutter rotates exactly once for each frame. Is that correct?

Or can you control both the angle of the opening (film cam degrees) AND the rate at which it 'spins' (video fraction) and receives light? If not, why is it you can still adjust the shutter in fractions when in film cam mode?

 

[Barry_Green]

The HVX simulates the way a film camera's shutter works. In a film camera there's a physical rotating shutter, in a video camera there isn't (with a few rare exceptions). In a video camera the shutter is "simulated", it's more of a timing mechanism that just tells the sensor "okay, stop gathering light now."

So the shutter adjustments such as 1/60 and 1/100 and 1/250 work identically whether in film cam mode, or video cam mode. Only the "syncro scan" shutter speed changes behavior. In film cam mode it tracks with the frame rate, emulating a film camera's shutter exposure times. In video cam mode it doesn't, it provides a set fixed exposure time.

 

[Jon Oskar]

I tried panning (not recording) with shutter set to 220 instead of the default 180 degrees. I cant see any difference, what am i looking out for? Does this apply to film-out as well? (making it more film like)

Is there no such thing as shutter speed when shooting 1080/25? What about 720/25?