[REQ] Region rendering

Feature requests, bug reports and related discussion

Region rendering:

Is a must have !
12
22%
Would be cool.
31
56%
Mmm... who knows ?
6
11%
Is not really needed.
5
9%
Is out of topic.
0
No votes
What's that ?
1
2%
 
Total votes: 55

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CTZn
Posts: 7240
Joined: Thu Nov 16, 2006 4:34 pm
Location: Paris, France

Post by CTZn » Thu Apr 26, 2007 11:18 pm

ook was fun :D 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 ?
obsolete asset

dmn
3rd Place Winner
Posts: 243
Joined: Thu Dec 21, 2006 6:42 pm

Post by dmn » Fri Apr 27, 2007 12:10 pm

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

User avatar
zsouthboy
Posts: 1395
Joined: Fri Oct 13, 2006 5:12 am

Post by zsouthboy » Fri Apr 27, 2007 1:06 pm

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
Posts: 517
Joined: Sun Mar 04, 2007 6:20 am
Location: Stuttgart, Germany

Post by mrCarnivore » Fri Apr 27, 2007 7:05 pm

dmn wrote: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.

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Kram1032
Posts: 6649
Joined: Tue Jan 23, 2007 3:55 am
Location: Austria near Vienna

Post by Kram1032 » Sat Apr 28, 2007 3:59 am

great idea!
(that would be cool)

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