Creating new camera vs. moving camera

[Caspian]

When I move the camera, I use these commands:

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camera->setTarget(core::vector3df(1,2,3));
camera->setPosition(core::vector3df(0,0,0));

The camera's target updates just as it should. However, y and z components are off by about 0.5. I'm focusing on some very small objects (of size 0.06 and 0.017), so this offset is very important to me.

Oddly enough, when I create a new camera like this:

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smgr->addCameraSceneNode(0, core::vector3df(0,0,0), core::vector3df(1,2,3));

the camera is positioned exactly the way I want it. Why is this? It's probably a bad idea to create a new camera every time I want it to move... but what am I doing wrong with changing the position of the camera?

Any help would be appreciated!

EDIT: If I do this:

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smgr->addCameraSceneNode(0, core::vector3df(0,0,0), core::vector3df(1,2,3));
camera->setTarget(core::vector3df(1,2,3));
camera->setPosition(core::vector3df(0,0,0));

the camera is positioned properly. However, I'm wasting system resources by continually creating new cameras, so I'd like to reposition the camera without having to create a new one. Thanks!

[Acki]

If you create a new camera you can remove the old one...

But did you try cam->updateAbsolutePosition() after positioning it ???

[Caspian]

Thanks! Calling the updateAbsolutePosition does the trick. I had thought that I was setting the absolute position...

It works great now .