Camera Setup

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Camera Setup

stereoscopic session 02

Contents

- parallel vs. toed-in

- easy depth space calculation

- advanced depth space calculation using pixel parallax

Stefan D. Voigt | svoigt.net


Parallel vs. toed-in

parallel:

- convergence can be adjusted in post (with shift of the zeroplane)

- audience can look everywhere in the picture

- cropping needed

toed-in:

- no convergance change possible -> has to be decided on set

- focus point in the center -> like squinting all the time

- images aren‘t matching exactly -> keystoning

- keystone correction needed

Stefan D. Voigt | svoigt.net


Parallel vs. toed-in

parallel:

- convergence can be adjusted in post (with shift of the zeroplane)

- audience can look everywhere in the picture

- cropping needed

toed-in:

- no convergance change possible -> has to be decided on set

- focus point in the center -> like squinting all the time

- images aren‘t matching exactly -> keystoning

- keystone correction needed

Stefan D. Voigt | svoigt.net


parallel setup: cropping

Stefan D. Voigt | svoigt.net

normal

image shift / film offset x

skew modifier in max


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


Stefan D. Voigt | svoigt.net

calculating the planes


distance between the cameras

in live-action film:

- 65 - 70mm = actual size; other distance grows or shrinks objects

- „eye distance“ = scale

Stefan D. Voigt | svoigt.net


advanced depth space calcualtion

image width * 1/30 = depth space in pixel

1024 / 30 = 34,13 px -> maximum deviation

-> how much depth should be used

-> which elements should get the most depth

Interesting with multi camera rigs

-> one rig for foreground one for background.

(foreground gets 24 px and background 10 px)

Stefan D. Voigt | svoigt.net


sources / thanks to:

Louis Marcoux - http://area.autodesk.com/blogs/louis/stereoscopy_

in_3ds_max_with_stereocam_modifier

http://louismarcoux.com/MaxTips.htm

David Shelton - http://davidshelton.de/

Stefan D. Voigt | svoigt.net


thank you

more information:

- www.svoigt.net/index.php/tutorials

free stereo rig for Cinema 4D:

- http://www.svoigt.net/index.php/downloads

free stereo rig for 3ds Max:

- http://davidshelton.de/blog/?p=69

Stefan D. Voigt | svoigt.net


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