I am having problems with my perspective cam distorting. When I move around in space it gets worse and worse. i have imported my sceene into a new max sceene and it is fine for a few miniutes then it goes back to getting distorted. This also starts to affect my user cams too, I can always create more of them by going to and ortho view and moving it. Any help or ideas?

Thanks

Max 2009, SP1 V-Ray 1.5 SP2

XP Pro64

Intel Xeon Dual Quad-core 3 GHz, 8 GB RAM, Nvidia Quadro FX 4600

I’m not sure if I understand the nature of the distortion. Would Camera Correction modifier help? Select Camera -> go to Modifiers menu -> Camera -> Camera Correction.

Otherwise, could you post a screen shot and/or zipped file of a sample scene?

E. K. Anna Hennequet [FA]

I took a screen shot. Its a lot worse than it shows. Can you see how the sphere is oblong? It isn’t suppose to be distorted, in any other view its fine, well except for one user view, that is distorted too. The major problem is that when in the perspective view it jumps around as you move the perspective cam around. Its kinda like a flicker effect when you move the camera. It streches it diagonally and then as you are moving it, the geometry is warps and flicks in different directions. You cant put a camera correction on a max default cam such as the perspective view. I can open a new scene and its fine and then I import the old file into the new one and it is fine for a short period of time then it starts to go all crazy and get distorted. I can still work in the scene because I can use all the ortho views and any new user views but I like the perspective view for close in details, so its an annoyance.

Max 2009, SP1 V-Ray 1.5 SP2

XP Pro64

Intel Xeon Dual Quad-core 3 GHz, 8 GB RAM, Nvidia Quadro FX 4600

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another view

Max 2009, SP1 V-Ray 1.5 SP2

XP Pro64

Intel Xeon Dual Quad-core 3 GHz, 8 GB RAM, Nvidia Quadro FX 4600

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Yikes. Thanks for posting that DaveRob. Just one more favor if you don’t mind. Could you upload a scene with just the sphere and the camera (from your screenshot) so some of us could take a look?

E. K. Anna Hennequet [FA]

Try it out! Let me know.

Thanks!

Max 2009, SP1 V-Ray 1.5 SP2

XP Pro64

Intel Xeon Dual Quad-core 3 GHz, 8 GB RAM, Nvidia Quadro FX 4600

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8294_lewj5PoybndjMNCO7P2A.zip

I just opened your scene and did see the oblong sphere. As soon as I selected the sphere, the distortion went away. I’ve tried orbiting and rotating views in various viewports, and it behaved normally. At this point I do not know what is causing the distortion in your scene. Hopefully someone else could take a look and pinpoint to the problem.

See attached pics. The screenshots are before and after I selected the distorted sphere. As you can see the distortion is gone in all viewports.

E. K. Anna Hennequet [FA]

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I figured it out! I had a camera with a camera correction on it and I was looking through it when I deleted it (I didn’t need it any more,) which turns it into the perspective view by default. Somehow it retained the camera correction that was on the original camera I was looking through. There is now way to remove the camera correction but I can create a new cam and look through it and delete it and now it doesn’t have the hidden modifier of camera correction on it, because it retains the properties of the cam you are looking through when you delete it. You just have to be careful because this creates more than one perspective view and you have to eliminate (by deleting new cams and getting a clean Perspective view) the corrupted perspective cam.

Thank you so much for spending your time and energy on this. I have been sitting here all afternoon trying to figure this out.

Thanks for your help!

Max 2009, SP1 V-Ray 1.5 SP2

XP Pro64

Intel Xeon Dual Quad-core 3 GHz, 8 GB RAM, Nvidia Quadro FX 4600

Thanks for posting the solution. I hadn’t realized that when you delete a camera with Camera Correction modifier, the distortion remains in the Perspective Viewport. I’m sure this info will be helpful to others.

E. K. Anna Hennequet [FA]

Thank you for this post Dave.
Look what happens to the rotation gizmo. (See attachment.)
A good tool for special effects, I think. :)

ivan

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The Camera Correction modifier has had that behavior since at least version 7.

That’s 7, 8, 9, and 2008.
For 2009, one click in the Perspective viewport removes the Correction.

Tim Wilbers [FA]

College of Arts and Sciences
Department of Visual Arts
University of Dayton
http://www.udayton.edu/
3ds Max: 7.5, 8, 9, 2008, 2009, 2010