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Hey guys,
I want to simulate the camera calibration in Povray, but I don't know exactly
the value of aperture in Povray.
Is it the diameter (povray units) of the camera? or is it only a referenced
value for the depth of view?
I have also heard, that the form of the aperture in Povray is square not a
circle. then what the meaning of the aperture???!!!
In the real camera the F-stops = local_length/diameter_of_the_camera. Has the
aperture value in Povray something so do with F-stops?
hope someone can help me.
ingwer
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Ingwer wrote:
> I want to simulate the camera calibration in Povray
The camera is different from a real world camera. For most
purposes the aperture is simply a point (point camera). Very
simple optics, in focus everywhere, and the raytracer does not
care that almost no light would pass through in real life ;)
> but I don't know exactly the value of aperture in Povray. Is it the
> diameter (povray units) of the camera? or is it only a referenced
> value for the depth of view?
The latter. See 3.4.2.3 in the documentation (of POV-Ray 3.7).
> I have also heard, that the form of the aperture in Povray is square
> not a circle.
In 3.7 there is also a bokeh keyword to set the shape.
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Christian Froeschlin <chr### [at] chrfr de> wrote:
> Ingwer wrote:
>
> > I want to simulate the camera calibration in Povray
>
> The camera is different from a real world camera. For most
> purposes the aperture is simply a point (point camera). Very
> simple optics, in focus everywhere, and the raytracer does not
> care that almost no light would pass through in real life ;)
>
> > but I don't know exactly the value of aperture in Povray. Is it the
> > diameter (povray units) of the camera? or is it only a referenced
> > value for the depth of view?
>
> The latter. See 3.4.2.3 in the documentation (of POV-Ray 3.7).
>
> > I have also heard, that the form of the aperture in Povray is square
> > not a circle.
>
> In 3.7 there is also a bokeh keyword to set the shape.
Hello Christian,
Thanks for your help. But I indeed want to simulate a camera with a aperture
F1.8 in Povray. Do you know another way to deal with it? Which value should I
give to aperture?
best wishes
Ingwer
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On 23-10-2013 9:28, Ingwer wrote:
> Thanks for your help. But I indeed want to simulate a camera with a aperture
> F1.8 in Povray. Do you know another way to deal with it? Which value should I
> give to aperture?
A possibility would be to use the Camera35mm macros developed by Edouard
Poor. The original post is here:
http://203.29.75.35/povray.binaries.images/thread/%3Cweb.49a52c329791b720bd47b0730@news.povray.org%3E/?ttop=366421&toff=850
Thomas
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