Clones of female in one room effect

[MayaV]

hi

i am not able to understand what u r trying to achieve as far as your problem regarding "motion control rig" goes there is a studio in mumbai called PRIME FOCUS they have motion control rig so you can hire from them if the budget allows you.

regards

MayaV

[Aruna]

Almost a simple, yet hacked (low-tech), solution. You have several givens.

1)Framerate of camera
2)Circular track and fixed camera DOF.

You have one variable.

1)Speed of camera around track.

Possible solution:

Try attaching a motor to the camera going around the track. An electric motor that puts out an exact speed will go around the track accurately all the time. I would definitely test this before doing it though.

If it's pretty close to travelling around the track through each of the four/five passes, you should be able to stabilize and speed up or slow down the movement with minimal visual artifacts.

Use comp to blend all five passes (I'm assuming one pass will have the alien and the others will have the actors).

[jussing]

It is also a possibility to shoot the girl in three of the positions with the camera locked-off (in the positions on the circular track where it would be, when each girl would be centered in frame), and then track the girls in on X'es you put on the wall, where she's supposed to be, that you film when making the big circular plate.

Just make sure each girl has at least to X'es - high and low.

- Jonas

[Aruna]

The only problem with that is when you actually do the comp, you'll have camera lens distortion to deal with. If you're prepared for that, great. This is probably a solution if you don't want to go through the trouble of getting the motion of the camera stable via a motor.

Originally posted by jussing
It is also a possibility to shoot the girl in three of the positions with the camera locked-off (in the positions on the circular track where it would be, when each girl would be centered in frame), and then track the girls in on X'es you put on the wall, where she's supposed to be, that you film when making the big circular plate.

Just make sure each girl has at least to X'es - high and low.

- Jonas

[arvid]

Sorry if it's obvious, but is the alien a person in a suit, some sort of puppet or CG?

It would be a good thing to be able to shoot this in multiple passes, like Aruna says. So I'm just wondering how many potential live-action layers we're talking about here.. kind of tempting to hang green cloth on the walls and shoot 5 talent passes and a background pass for consistant lighting, and no need for stitching :) If you get a decent motor you'd get away with just some minor stabilizing of the talentpasses with lensdistortion built in.

[jussing]

Originally posted by Aruna
The only problem with that is when you actually do the comp, you'll have camera lens distortion to deal with.
This, however, is absolutely spot-on true.

Do you have a suggestion on how to deal with lens distortion?

Cheers,
- Jonas

[Aruna]

Depending on the package you're using, and how well the supervisor on set is (or even has the time to do this), I would throw up a card with grid on it in front of the camera full frame that you shoot your actors with. The camera lens will distort the grid. Once in comp, and using whatever comp package, take a regular grid and distort it to match the camera distortion. Apply that warp to your plates and voila. Of course, I always mentioned this with the supervisors I used to work with, and seldom received something of this nature. I often had to manually guess what the distortion of the lens was. This would change with anything other than prime lenses though, since the focal length of the lenses would vary from take to take depending on how the camera op operates.

[zedsdead]

too bad it wasnt 3d, track the whole shot, and put in 3d characters......done. the lens distortion thing, every studio here uses plug ins.....heres a free one for AE:

http://www.pluginsworld.com/Photoshop/plugins.php3?action=software327&soft=Photoshop

just type in lens distortion in google.

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