Hello. This is a guide of how to make a fish-eye/wide lens effekt in blender. Its not that hard but it hase some strange factors in it.
BE AWARE! RENDERTIMES CAN GET REALLY HIGH WHILE USING THIS
First thing to do is to set up two cameras and a sphere, as shown in the picture below. Remove the standard camera and make a new one from either side or front.
Copy (Shift + D) the current camera and rotate it 180 degrees so it points in the other direction. Then you make a sphere that stands out just a bit from the one camera. To easily make a animation out of this parent the sphere with the cameras. Mark the sphere first and the first camera and parent (Ctrl + P) and then do the same with the other camera.
Camera.001 will look like this now:
To archive the effect, we have to have a material on the sphere equivalent to a mirror. It may also be a smart move to turn off Traceable on this material so the sphere wount cast shadows into the scene.
Set up a scene
Set up a scene for the camera to render. I used a regular cube in this tutorial and rotated it on the plane.
Camera.002 is used for a preview camera, as the rendercamera (Camera.001) is directed into a sphere. The preview camera is usefull for animations where you can see somwhat the renders camera.001 gets.
Its better to have this camera than have nothing to preview the scene animation at all.
Results of Camera.001:
Animation with this lens effekt:
<param name=“movie” value=“http://www.youtube.com/v/WJFpqePlLac&rel=1”></param><param name=“wmode” value=“transparent”></param><embed src=“http://www.youtube.com/v/WJFpqePlLac&rel=1” type=“application/x-shockwave-flash” wmode=“transparent” width=“425” height=“355”></embed>
The distance between Camera.001 and the sphere decides the strenght of this effect. By moving the camera closer to the sphere the effect is less dominant. Moving the camera further away from the sphere increases the effect. It can be very handy to do some testrenders on this before you render high-res.
Sorry for the bad English “some” places.