720p/60fps - fast shutter water clips wanted

Brooksilver

Brooksilver

Active member
For those with access, I would love to see how the HVX does when recording at 60fps when pouring water or wine into a glass - seeing all the droplets and action in slow-motion.

The reason specifically is I am wondering how it will do for those overcranked Hollywood fight sequences in Gladiator and others where everything is hyper-real and you see every movement cleanly (no interpolating) such as mud flying when someone crashes into the ground.

Anyway, I figure the water test would be easier to pull off to get an idea of this effect.

Thanks.
 
Actually that Saving Private Ryan/Gladiator effect is pretty easy to achieve with any camera that has shutter speed control. Just set the shutter really high, well... within proper exposure settings of course, and then you are essentially set. Depending on where you set it, there will be no motion blur/interpolating.
I've never even had a DVX100, but did this all the time on my friends XL-1.

=)
 
If you set the shutter speed faster than the rate you are recording then you will capture the particle effect I am referring to, but you will not get slow-motion without duplicating frames if you record at 24 or 30 fps. Thus recording at 60 fps should allow clean slow motion and pouring water and watching it splash around is a simple test to see how well 60fps does.
 
So let me clarify: you want to see overcranked 60p, played back at 24p, with a high shutter speed to capture individual droplets? Is that what's being asked for?
 
Yes.

I did a quick search online for high-speed clips. They are made using custom cameras that don't have the quality we're talking about, but they can record at very high-speeds to capture interesting dynamics:

http://www.engr.colostate.edu/~dga/high_speed_video/#Dynamics

There are many experiments on this site that look fairly straight-forward to test. I am personally interested in see how the HVX does at 60fps played at 24pfs to capture these types of effects (though I know that many of them are recorded closer to 100fps or more). I don't know what settings would be best for the shutter speed, but perhaps two or more sample clips with various speeds would be a good comparison.

Thanks for the consideration.
 
Barry_Green said:
So let me clarify: you want to see overcranked 60p, played back at 24p, with a high shutter speed to capture individual droplets? Is that what's being asked for?
Click to expand...

Yes Barry - When you see slow motion 35mm photography, it is usually at 120 shutter for 60fps - this makes it 1/48 when you play it back at 24fps. The footage we have already seen of the martial arts guy looked like 60fps with 1/48 shutter and each individual frame contained a lot of blur in the motion - it looked very videoish to me - higher shutter looks more natural to me.

Shooting water would also give us a comparison to 35mm photography since it is a popular choice for nature photographers. :beer:
 
soarprod said:
The footage we have already seen of the martial arts guy looked like 60fps with 1/48 shutter and each individual frame contained a lot of blur in the motion - it looked very videoish to me - higher shutter looks more natural to me.
Click to expand...

Where I noticed the most blur was when we saw the 60fps footage of the cheerleaders at the basketball game. They were dancing and moving quickly and there was a lot of blur. When I first saw that footage I was pretty dissapointed because all the blur made it seem like slowed down 24fps video, not actual captured 60fps footage. But then I remembered the variable shutter and I figured that would solve the problem and if the shutter angle was changed I wouldn't get the blur. I sure hope that's true, because the footage looked great with the exception of the blur.
 
Okay, I've got a clip now of some red liquid being poured in a glass. I used a 10-degree shutter angle at 60 fps, so it took a LOT of light to get this shot! :)

I'll convert it and post it to Jarred.

Regarding the kung fu footage & the cheerleaders -- I don't think we were using the variable shutter during those shots. I think they were shot at 1/60 the whole time, which would explain what you're seeing. But you can most definitely use a variable shutter, as I've just done it.
 
The shot of feet running (glidecam) in the Visible Man footage was @ 60fps with 45 degree shutter. I've just learned that clips of the 3-minute reel will be making some appearances on the web.

I.
 
Same clip, I just tried making an .mp4 so perhaps Mac users would have an easier time with it.

Shot at 60p, with a 22.5-degree shutter. That means an exposure time of something like 1/1000. I was trying to get that strobelighting "freeze" effect on the drops.

(and for those who will ask, no that's not some oddball wine, it's pomegranite juice, a drink that will curl the hair on your chest).

I should post another/similar clip at a 350-degree shutter so people can see the variety of looks you can get even out of the same frame rate...

Oh, and for workflow, this clip was shot in-cam at 720/24pN at 60fps, and then downconverted by the camera to DV on its internal tape. I then captured it in the old traditional way and rendered this out from the Vegas timeline.
 
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