PDA

View Full Version : How to imitate an extreme wideangle-lens with distorsion?


pic
09-02-2003, 10:40 AM
I am trying to find a camera-setting that imitates a fisheye-lens with extreme distorsion. Can anybody help?

txbob
09-02-2003, 11:36 PM
on the camera item properties panel you'll find a zoom control. The default setting ia already pretty fisheyed...( this is so loaded items automatically look "3D" and not flat) but lowering the setting will make the effect stronger. I often use a setting of 1.2 to get a POV type shot. Even lower will exadurate more. Becareful when the numbers get really low, because the effect in multiplied exponentially, so one little click starts to make a huge difference.

Also note that as you lower the value, you'll have to move the camera closer to your objects if you want them the same relative size.

pic
09-03-2003, 03:41 AM
thanks for your reply

yes, this technique works as long, as you want to set to an extreme wide-angle effect imitating an corrected camera-lens. the "distorsion" in this case is result of a big difference of scaling of near positioned object to those in the background.

i searched the forum for simular threads (yes, this should have been the first thing to do :rolleyes: ) and found useful information in this one: http://vbulletin.newtek.com/showthread.php?threadid=8143&highlight=fisheye

'Juans special projection'-plugin works pretty fine, but the distorsion-effect seems to get weaker to the corner of the picture.
the tutorial of thekho looks very cool. i will try this next.

thanks a lot

Gui Lo
09-04-2003, 12:12 PM
Hi Pic,
This problem has cropped up a few times so I am not the one who fist thought of this. But I do love the simplicity.

Anyway to get the fish eye distortion simple point the camera at a reflective sphere. The reflection will have the correct distortion.

It need not be a complete sphere but enough to cover the whole of the view.

1. Parent the camera to a reflective sphere and Target the same sphere.

2. Adjust the of the Camera distance so that the view is correct(You do need to do a series of F9 tries).

3. Once you have the image/sequance flip them in Photoshop.

Hope this helps.

Valan

pic
09-04-2003, 01:17 PM
Hi Gui Lo,

I made a quick test and it works very well. The workflow you described is easy to manage. Thanks a lot!

And after I checked the "unseen by rays"-field in the object properties of the reflective ball the mirrored image of the ball disapeared... Great!