Orthographic camera tests

General questions about Indigo, the scene format, rendering etc...
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Pibuz
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Re: Orthographic camera tests

Post by Pibuz » Fri Jun 22, 2012 7:43 pm

Ortographic camera and section cuts are WONDERFUL TOOLS!
Can't wait to test them!

StompinTom
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Re: Orthographic camera tests

Post by StompinTom » Fri Jun 22, 2012 9:18 pm

WHOOP!

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CTZn
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Re: Orthographic camera tests

Post by CTZn » Sat Jun 23, 2012 12:29 am

OnoSendai wrote:Hi CTZn,
As Etienne told me once, there is such a thing as a real orthographic lens, which does have a focal plane and focus blur - a telecentric lens:

http://www.edmundoptics.com/learning-an ... ne-vision/

edit: However, I have implemented the orthographic camera in Indigo as you described, as opposed to a telecentric lens.
Did someone request a telecentric lens anyway :twisted:

Frankly I've been naive enough to believe that those two features would never be for Indigo and yet you did them !
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delle
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Re: Orthographic camera tests

Post by delle » Sun Jun 24, 2012 6:13 pm

While you are playing with cameras, why don't you consider to add clip-planes?
I need them for interior rendering of small rooms (european apartment are not so big :mrgreen: ).
With current Indigo is impossible to render small bathroom.... (try to render a 2.5x2 mt room with daylight and without using fisheye camera :shock: )

:wink:

E.g. Try to render this image without removing the ceiling (if you remove the ceiling the "light response" changes = the light escapes from above)

The only way to render a bathroom like this (without using insane camera angle) is to use clipplanes or, better, to create a "virtual wall" (e.g. a wall invisible to camera but reflective to light). In 20-years old PovRay was possible... :mrgreen:

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Re: Orthographic camera tests

Post by PureSpider » Sun Jun 24, 2012 9:22 pm

OnoSendai wrote:This and section planes will be in the next 3.4.x builds pretty soon!

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galinette
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Re: Orthographic camera tests

Post by galinette » Mon Jun 25, 2012 8:46 pm

delle wrote: The only way to render a bathroom like this (without using insane camera angle) is to use clipplanes or, better, to create a "virtual wall" (e.g. a wall invisible to camera but reflective to light). In 20-years old PovRay was possible... :mrgreen:
There is a third one : a telecentric cam :) or pseudo-telecentric (ie a cam with a standard or tele FOV, an position/entrance lens inside the room, but a virtual entrance pupil much behind and located outside the room. This is physically plausible, Ono will prefer this :)
Thechnically, this would be however very expensive to build, as you need a huge lens (a few meters for the bathroom), this is why these lenses are only made for shooting small objects. But you can take pictures with perspective virtually at infinity, and physically very close from the objects.

Etienne
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CTZn
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Re: Orthographic camera tests

Post by CTZn » Thu Jul 05, 2012 12:30 am

galinette wrote:Thechnically, this would be however very expensive to build, as you need a huge lens (a few meters for the bathroom), this is why these lenses are only made for shooting small objects. But you can take pictures with perspective virtually at infinity, and physically very close from the objects.
It does sound like a real orthographic lens (given an ideal setup); as such, it requires one wall to be removed. Section planes are quite a tour de force.
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galinette
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Re: Orthographic camera tests

Post by galinette » Thu Jul 05, 2012 12:35 am

CTZn wrote:it requires one wall to be removed
No! Not required
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CTZn
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Re: Orthographic camera tests

Post by CTZn » Thu Jul 05, 2012 12:58 am

Ah I got it ! The rays are conducted from the eye through a rather small lens in the wall, toward a larger one putting the rays parallel.

Or the other way around :)
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