POV-Ray : Newsgroups : povray.newusers : Perspective problem w/ Hight_field : Re: Perspective problem w/ Hight_field Server Time
2 Nov 2024 07:27:18 EDT (-0400)
  Re: Perspective problem w/ Hight_field  
From: destroyedlolo
Date: 13 Aug 2004 19:42:20
Message: <411D5F69.6040106@yahoo.com>
Hi Gonzo,

gonzo wrote:
> 
> Hi Laurent, the photo is using a very long focal length lens which 
> compresses distance and exaggerates perspective. Looks like an 700mm or 
> higher lens.

... and it's also what my eyes show ;-D


> 
> One of the POV gurus may know how to convert standard camera focal 
> lengths into POV statements, but I don't :-(

I'll try in the advanced user NG also.

> You should read sections 2.3.1.1.3, 2.3.1.1.4, and  2.3.1.1.5 of the 
> POV-Ray docs about camera angles and distance.  If its possible, you may 
> be able to do it with just the direction & angle keywords, or else try 
> moving your camera further back and use a smaller angle.

I make some other tests using angles (and w/ a better point of view).

* The image without specifying any "angle" : 
http://destroyedlolo.homeunix.org:8080/~laurent/sans_angle.jpg

* The same with "angle 38" :
http://destroyedlolo.homeunix.org:8080/~laurent/angle_38.jpg

The result is better but ... you have to know the original view to 
recognize the mountains :-(

The other point is if I continue to reduce "Angle", I have also to move 
my camera further and it's bad because there is other mountains in my back.

Bye

Laurent


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