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Carrara F.A.Q (Last Updated: 2024 Nov 05 6:06 am)

 

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Subject: Lens Distortion?


todd71_63116 ( ) posted Fri, 07 November 2003 at 9:48 AM · edited Thu, 07 November 2024 at 10:38 PM

ive got a wide angle lens, normal, and a zoom...is there a way to distort the image?


falconperigot ( ) posted Fri, 07 November 2003 at 11:37 AM

file_83144.jpg

It depends what effect you're after. You could create a 'lens' to put in between the camera and your scene; a distorted plane works well. This picture uses a formula with glass shader applied. HTH Mark


todd71_63116 ( ) posted Fri, 07 November 2003 at 2:06 PM

like a fisheye distortion or some of the things you can do in poser with the cameras there...


todd71_63116 ( ) posted Fri, 07 November 2003 at 2:06 PM

like a fisheye distortion or some of the things you can do in poser with the cameras there...


Kixum ( ) posted Fri, 07 November 2003 at 2:22 PM

The length of the lens of the camera in Carrara is a user option already. Are you asking for something more than that? -Kix

-Kix


bluetone ( ) posted Fri, 07 November 2003 at 5:48 PM

Set your camera zoom to a very short setting and you'll have a fish-eye lens effect. Try animating our zoom setting at the same time as you animate your camera position. If you time it right, you'll get the classic 'Vertigo' effect created by Alfred Hitchcock. i did it for a client, and they loved how it centered everyones attention on the final message of the animation. HTH :>


todd71 ( ) posted Fri, 07 November 2003 at 7:11 PM

im such a Photo novice i probably cant explain this right..but what i was trying to do was get a worms eye view of the subject of my image..i tried to get at the base of it and do a loooong shot..like if you get right up against the base of a building and look up to the top of it...instead all i seemed to be able to do was zoom away from it...instead of a more distorted view of it..did i explain that well enuff?..lol


falconperigot ( ) posted Sat, 08 November 2003 at 3:27 AM

You probably need to move your camera in closer. Use the top and side views to physically drag the camera close to the base of your object, then rotate it so it's pointing in the approximately direction you want (final adjustments can be made using the dolly in camera view). You may need to zoom out to 50% to actually see the camera: the default position is quite a long way from the working box. When you've got the camera in position you can adjust the zoom to give you the amount of distortion you want. Mark


bluetone ( ) posted Mon, 10 November 2003 at 8:53 PM

The important thing to consider is that you need to use the zoom slider for the lens, (found in the properties box,) NOT the zoom tool in the window. The zoom tool won't change how your camera will render, it will only change that current view in the assembly room. Hope thie helps!


Julian_Boolean ( ) posted Thu, 13 November 2003 at 7:47 PM

Another way to simulate a fish-eye lens is to create a 100% reflective sphere, place it directly in front of your rendering camera and group them. Turn the group 180 away from your scene, and render. You'll see your scene as it is reflected on the sphere and... voila! Fish eye! Try different reflective shapes and see what you get.


pogmahone ( ) posted Sat, 15 November 2003 at 1:18 AM

Great tips in this thread. I've learned a lot just by reading through! Thanks guys :o}


Kixum ( ) posted Sat, 15 November 2003 at 4:41 PM

One time I also created a perfect radial gradient formula which could be placed into the refraction channel. This could then be used as a fisheye "lens" that would produce slick results. -Kix

-Kix


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