[REQ] Region rendering

[CTZn]

ook was fun it's a reference to my monkey's pride (as a reference to me, I own no monkey)

So dmn, you are proposing to use region rendering as a way to fake effectively a shift lens, am I correct ?

[dmn]

I think maybe just allowing the image borders to be changed relative to the vanishing point is more exactly what I want to do, a tilt shift lenses has its own nuances. I don't really want to mess with adjusting the shift plane on a normal basis. And I'm not sure exactly how much Indigo imitates lens distortion.

A shift lens would be the real world equivalent of what we want to do, to adjust the film plane's location on a plane parallel to the lens in order to control (or prevent) distortion of vertical lines.
The tilt aspect is something that I have not played with at all but certainly could be interesting and useful for very artistic renders.
Examples of Shift lens:
http://www.zoerk.com/pages/g_church.htm
http://www.uscoles.com/pclens.htm

Here's are examples of tilt shift work:
http://hame.ca/tiltshift.htm
http://www.bentimagelab.com/sg/pages/Smallgantics.htm
How it works:
http://www.mir.com.my/rb/photography/co ... 35mmts.htm
and
http://photo.net/equipment/canon/tilt-shift

[zsouthboy]

Back when I made my comments re: region rendering, I did feel that way.

Now it is something that's needed - we've gotten a whole lot of fun new stuff in the meantime.

[mrCarnivore]

And I'm not sure exactly how much Indigo imitates lens distortion.

Since indigo is using a thin lens model there are NO lens distortions using the indigo camera. So to perfectly imitate a shift lens you could either model such a lens in indigo or use region rendering and then apply lens distortions afterwards if you want them.

Tilt is a totally different aspect that can NOT be achieved with region rendering. I think it might be possible with minor adjustments to the thin lens model, but I'm not sure. Might be interesting to have it in indigo, but not a widely used must-have, imho.

[Kram1032]

great idea!
(that would be cool)