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Mixed Motion


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#1 siddharth diwan

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Posted 12 April 2007 - 08:23 AM

I saw this film where the character was moving normally and the cars and everything else around him was in slow motion dat too a bit blurry...how is that done?
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#2 Dory Breaux DP

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Posted 13 April 2007 - 01:33 AM

I have heard of it being done with REALY good chroma keying... but that seems like it would be rather... aggravating?
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#3 Michael Nash

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Posted 13 April 2007 - 02:13 AM

You mean like this?

Compositing and motion control, in this case.
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#4 Nick Mulder

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Posted 13 April 2007 - 02:16 AM

Read up on green-screening and motion control (if the camera was moving)

there are some great "how this was done" vids you can download here - including the "shots of mixed film speeds" section
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#5 David Sweetman

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Posted 13 April 2007 - 02:27 AM

I have heard of it being done with REALY good chroma keying... but that seems like it would be rather... aggravating?

no, rotoscoping is the aggravating one.
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#6 siddharth diwan

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Posted 14 April 2007 - 09:14 AM

No motion jus a simple static block shot how does that happen
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#7 Nick Mulder

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Posted 14 April 2007 - 03:56 PM

Read up on green screening, rotoscoping, chroma keying, compositing and punctuation.

After-effects, Shake, Flame etc... are programs to read up on.

Have you ever played around with masks and layers in photoshop ?

The link I gave for motion control will still be helpful as the movies show the compositing process in action (just pretend the camera isn't moving).

Also we are making an assumption you know how to achieve speed effects in camera in the first place - do you know about over and undercranking ? what about shutter angles for more or less motion blur ?

You will find you get more help if you are specific and less broad with your queries ...
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rebotnix Technologies

Aerial Filmworks

Media Blackout - Custom Cables and AKS

Rig Wheels Passport

Paralinx LLC

CineTape

Technodolly

Willys Widgets

Abel Cine

New Pro Video - New and Used Equipment

CineLab

Glidecam

Wooden Camera

FJS International, LLC

Broadcast Solutions Inc

Tai Audio

Visual Products

Ritter Battery

Metropolis Post

The Slider