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What is the best shutter/aperture for filming?

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veerski
Posts: 8 - Karma: 14
Hey NS, Ive been fidlin around with my camera and i cant find a good shutter speed for good slow mo and stuff.
post below what you guys use. would be greatly appreciated
Feb 9 2013 10:14AM
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dunesquirrel
Posts: 464 - Karma: 70
your shutter speed should always be double your frame rate. so for slow motion, use a frame rate of 60fps if you have it. at 60 fps you shutter speed should be atleast 1/125 of a second.

your aperture should be the last thing you touch with regards to exposure. most lenses are sharpest around f6 and f8. at about f8 you should be able to keep eeverything in focus for follow cams
Feb 9 2013 11:51AM
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[J_Gasper]
Posts: 2983 - Karma: 1,594
Every situation will be different. However, people typically try to keep a constant aperture throughout an edit. Its personal preference. I usually try to keep mine around 250. Aperture is a different story. Im always changing my aperture to allow for different types of light and different types of styles. The higher the number (f/6.3-f11) is right where you want to be for follow cams. Most things are in focus at that point, and lenses are typically shaper around f6.3-f8. If you want to shoot a shallow depth of field, you can achieve that by shooting a lower number, such as f/3.5. But remember, try to avoid shooting wide open. It is the softest point in your lens.
Feb 9 2013 11:52AM
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_RNS_
Posts: 172 - Karma: 736
I find that in action sports, 180 shutter rule has way to much motion blur. IMO, I prefer higher shutter speeds for action sports because I can slow it down with Twixtor much easier and it is there is a lot less blur. The problem is though, at higher speeds you can get wobbly distorsion. I prefer to use f/8 the most because I find my lens is sharpest there.
Feb 9 2013 2:25PM
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WillStart
Posts: 3955 - Karma: 3,192
*constant shutter speed
Feb 9 2013 2:27PM
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[J_Gasper]
Posts: 2983 - Karma: 1,594
haha, yes. this is that i meant. my bad

Feb 9 2013 2:50PM
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Mag
Posts: 8155 - Karma: 14,809
Mind explaining what the 180 degree rule is? I've never really understood it for some reason, I imagine it's seperate to this?

http://en.wikipedia.org/wiki/180-degree_rule
Feb 9 2013 3:15PM
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eheath
Posts: 61604 - Karma: 123,113
It refers to how film shutters work and shutter degrees. This image will help illustrate what I can't explain.

Click for larger image

The way this shutter works is that the shutter speed is always double the frame rate due to the "180 degree" half sphere shutter shape (such a fucking terrible way to word it im sorry).

Anyway, so for 24fsp double the frame rate is 1/48 second shutter, each frame of video/film is 1/24 of a second so you minimum shutter is 1/24 but 1/48 and hire will have little to use to achieve the most cinematic look to their video. For skiing, this is whatever IMO 1/125 shutter isn't bad but I tend to keep mine at 1/180. Shooting 24fps i keep mine at like 96, I cant handle the blur that 1/48 shows and thats just my opinion for action sports. When it comes to a narrative/cine setting it usually is better, but for action i dont like going bellow like 1/96.


For reference, the link you posted has to do with camera angles and the correct way to shoot a scene with two camera, it has nothing to do with the mechanics.
Feb 9 2013 3:27PM
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eheath
Posts: 61604 - Karma: 123,113
god i need to type slower
Feb 9 2013 3:29PM
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Mag
Posts: 8155 - Karma: 14,809
Semi circle? haha

And thanks, the thing I don't get is what the problem with shooting slower than twice the shutter speed is, what negative impact does this have, and in relation to the shutter?

thanks
Feb 9 2013 3:51PM
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eheath
Posts: 61604 - Karma: 123,113
FUCK semi circle, thats what i was looking for

Just try it out, you'll see why, the motion blur is awful.
Feb 9 2013 3:52PM
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Mag
Posts: 8155 - Karma: 14,809
Surprisingly large difference here, I guess I never really shoot that slow anyway.

180 Degree Shutter Rule from Nick Jossendal on Vimeo.

Feb 9 2013 4:11PM
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slugworth
Posts: 1247 - Karma: 772
I'm glad I saw that^
Feb 9 2013 5:04PM
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eheath
Posts: 61604 - Karma: 123,113
Realize that this is a very exaggerate test, very small movements very fast is really the only time high shutter speeds really look that bad. With skiing, its not really a big deal, don't be afraid to break the mold of shooting double the shutter speed, its such a stupid trend with dslrs and shit.
Feb 9 2013 5:10PM
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TijmenDal
Posts: 4849 - Karma: 1,295
1/125, f/11. ALWAYS. Compensate by adjusting your ISO
Feb 9 2013 8:00PM
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eheath
Posts: 61604 - Karma: 123,113
meh, i disagree with this but ok
Feb 9 2013 8:17PM
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Mag
Posts: 8155 - Karma: 14,809
Pretty sure it was a joke
Feb 9 2013 8:23PM
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TijmenDal
Posts: 4849 - Karma: 1,295
I don't know the first thing about filming. Asking what the best aperture is is just stupid. Don't you always use twice the shutter speed of your framerate (more or less)?
Feb 10 2013 4:47AM
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