Documentation

Difference between revisions of "Focal length 3D"

 
Line 2: Line 2:
 
[[File:Brennweite3D1.png|Focal length 20°]]<br>
 
[[File:Brennweite3D1.png|Focal length 20°]]<br>
 
(Image 1: 3D view with 20°)<br><br>
 
(Image 1: 3D view with 20°)<br><br>
The upper image with 20° focal length is almost without perspective distortion and corresponds approximately to a parallel projection. The following image with 90° is strongly spherically distorted:
+
The upper image with 20° focal length is almost without perspective distortion and corresponds approximately to a parallel projection. The following image with 90° is strongly spherically distorted:<br><br>
 
[[File:Brennweite3D2.png|Focal length 90°]]<br>
 
[[File:Brennweite3D2.png|Focal length 90°]]<br>
 
(Image 2: 3D view with 90°)<br><br>
 
(Image 2: 3D view with 90°)<br><br>
Line 8: Line 8:
 
[[File:FocalLength3D3.png|Dialog for focal length]]<br>
 
[[File:FocalLength3D3.png|Dialog for focal length]]<br>
 
(Image 3: Dialog for focal length)<br><br>
 
(Image 3: Dialog for focal length)<br><br>
In the 3D view, you can now set the background color in addition to the focal length with a [[M2|mouse click M2]] in the context menu.
+
In the 3D view, you can now also set the background color in addition to the focal length with a [[M2|mouse click M2]] in the context menu.
 
[[de:Brennweite 3D]][[fr:Longueur focale 3D]]
 
[[de:Brennweite 3D]][[fr:Longueur focale 3D]]

Latest revision as of 10:56, 24 November 2021

The focal length of the view, i.e. the displayed viewing angle in the 3D view, can be changed in the context menu. From 10° (telephoto or quasi parallel projection) to 90° (wide angle or almost fisheye):

Focal length 20°
(Image 1: 3D view with 20°)

The upper image with 20° focal length is almost without perspective distortion and corresponds approximately to a parallel projection. The following image with 90° is strongly spherically distorted:

Focal length 90°
(Image 2: 3D view with 90°)

The default angle is 50° and gives a pretty realistic 3D representation.

Dialog for focal length
(Image 3: Dialog for focal length)

In the 3D view, you can now also set the background color in addition to the focal length with a mouse click M2 in the context menu.