Aspect Ratio
A Little known ( or at least little used ) feature of the camera is the Aspect ratio. I've used this in the past when I've rendered a non-standard size image. If you make and extra wide image you have to widen the aspect ratio or the image gets deformed.
Anyway, last night I actually used the aspect ratio to create an effect rather than avoid one.
I placed the camera close to the nose of a sheep. By playing with the aspect ratio I was able to get one of these "HUGE NOSE" shots you sometimes see on TV. There are other ways to get the same effect by changing the camera type for instance. However as POV-Ray is an ongoing learning experience every idea is a new arrow for your bow.
To change the aspet ratio, include the "up" and "right" settings in your camera block.
up <0,1,0> right <1,0,0>
Anyway, last night I actually used the aspect ratio to create an effect rather than avoid one.
I placed the camera close to the nose of a sheep. By playing with the aspect ratio I was able to get one of these "HUGE NOSE" shots you sometimes see on TV. There are other ways to get the same effect by changing the camera type for instance. However as POV-Ray is an ongoing learning experience every idea is a new arrow for your bow.
To change the aspet ratio, include the "up" and "right" settings in your camera block.
up <0,1,0> right <1,0,0>
posted by POV Bloke @ 1:02 AM
2 Comments:
At 7:12 AM,
orestn said…
Do you know if the aspect ratio can be parameterized? That might make for some interesting effect in an animation.
At 1:22 AM,
POV Bloke said…
I dont see any reason why not, its just part of the SDL and therefore subject to the "clock" variable like everything else, I might give that a try. Thanks for the idea!
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