Lens shift

[galinette]

Dear all,

I would like to set up cameras for stereoscopic display, in the proper way (with asymetric frustum, to have exact projection plane matching).

For this, I need to understand exactly how the lens shift is adressed in Indigo.
I understood that the lens shift unit is meters, in real world scale. This is OK.

- Does Indigo really shift the lens, with a fixed sensor position (as we would do in real world with a decentering lens, with the camera body attached to a tripod), which is the direct understanding of "lens shift", but would change the parallax in the picture
- Or does he shift the sensor in the opposite way. This would have the same effect on perspective, but would preserve the parallax.

The difference is small in most cases, but critical for perfect stereo image generation.

Thanks in advance,

Etienne

[Soup]

I can't answer that question myself, but I just ask that you post your results - I would love to see how your expierments come out!

[OnoSendai]

Hi Etienne,
In Indigo, lens shift does indeed directly shift the lens. The sensor position is not affected.

[galinette]

Tanks, it worked!

Lemo : this is confidential picture right now, but I hope we will be able to disclose some to the gallery soon...

Etienne

[Lemo]

Galinette: Well I wish I was Soup and a developer, but I'm just Lemo

[galinette]

Oops : I mixed the posts... I wanted to write Soup, of course