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Parallax effect from a positionally fixed camera

Posted: Tue Mar 22, 2022 9:25 pm
by JEEK
Hey guys,

Really noobie question here.

I have a Super-Tele camera doing a trucking motion (most commonly and mistakenly referred as a "pan" :P) in front of multiple buildings.

I've recreated a very crude version of my scene to better illustrate my setup here: https://i.imgur.com/SqxEqzK.mp4

Goal: Instead of doing a camera truck in Cinema 4D, I'd like to render out 1 single image containing all of my buildings (as such) so that I could "fake" the trucking motion by simply animating the image's Position X in After Effects.

Problem: By doing so, I lose the parallax effect of my buildings (the one seen in the Cinema 4D video above), where we can see a glimpse of the buildings' sides as they pass in front of the camera.

Rejected solution: I could do a render a very simple "frontal" view of my buildings in Cinema 4D and that would solve my problem, sure, but I'd still very much like to preserve this parallax effect, where we see the buildings' sides (in relation to the position of the camera).

I know Octane has a lot of camera types and I've been reading the documentation, but I still can't seem to figure out if my goal is even possible to begin with.

I have Element 3D in After Effects if that helps, but I'd still prefer rendering this 1 single image in Octane if possible.

Thanks a ton!

Re: Parallax effect from a positionally fixed camera

Posted: Mon Mar 28, 2022 4:25 pm
by frankmci
I think what you are asking for is fundamentally not doable with a single, static image card. Depending on the actual image/scene content, you might be able to get away with using a second card that approximates what the "sides" should look like, and desplace that layer in AE behind the "front" card. Then use AE's 3D camera to give you real parallax, but using two 2D cards. Since you are using such a long lens, it might be close enough to fool anyone who isn't looking for the trick, especially if you have motion blur.

But it's hard to say without knowing the actual scene content.

Re: Parallax effect from a positionally fixed camera

Posted: Wed Apr 13, 2022 5:23 am
by JEEK
Hey frankmci!

I'm sorry I never replied to this. I just wanted to thank you for your assistance and suggesting a few paths to explore. I've decided to just bite the bullet and do a full 3D render of the row of buildings.

Still, thank you very much!

Cheers.