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Old 10-04-2012, 04:32 AM   #1
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Why are my references not similar from maya to zbrush?

Hey guys, need help on this. We have an illustration that I want to convert to a 3D version using the 2D drawing as a guide.

In maya, we used a 40mm camera and modeled it to fit the reference imagery. Upon using GoZ and bringing the file into Zbrush and loading in the reference image. It doesn't seem to line up. Perspective doesn't seem to work.

We want to follow the reference accurately and have an exactly similar version but in 3D. The area I pointed out with the red arrows really show the difference based on camera angle.

Here is the image
Maya compared to Zbrush

please help! Thanks guys
 
Old 10-04-2012, 08:15 AM   #2
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Why are you modeling through a camera in Maya? Why not model in ortho views and this should translate correctly in ZB with perspective turned off.

I think that the default FOV in Maya perspective is something like 27(I'm a Max user so this may be incorrect) so adjust ZB's FOV from the document dropdown to match.

Also, if you already have the model's forms/proportions correct in Maya then you don't really need the reference in ZB if you're just detailing.
 
Old 10-04-2012, 11:44 AM   #3
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Why are you modeling through a camera in Maya? Why not model in ortho views and this should translate correctly in ZB with perspective turned off.

We wanted to match the drawing exactly so we figured modeling with perspective in mind would have it match up more appropriately. We want the 3D to look exactly like the 2D image.

I think that the default FOV in Maya perspective is something like 27(I'm a Max user so this may be incorrect) so adjust ZB's FOV from the document dropdown to match.

I've tried playing with every value in Zbrush to match the vray camera as well as the maya camera settings. At no point did it line up. =(

Also, if you already have the model's forms/proportions correct in Maya then you don't really need the reference in ZB if you're just detailing.

As mentioned, kinda want it to sit next to the illustration looking perfectly identical so Im trying to get the perspective model to line up with the reference image and since it was modeled with the perspective in mind...it should line up. =( Thanks anyway for the advice though, appreciate the effort.
 
Old 10-17-2012, 11:06 PM   #4
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in zbrush it looks like you want to turn off perspective

another thing if the mesh is not aligning try tool>deformation>unified
 
Old 10-22-2012, 10:46 AM   #5
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I realized that the main issue derived from the camera local button.

In maya, even in ortho, my camera was facing straight but maybe -20 in the Y axis.

That couldn't be matched in Zbrush as I was using local orientation so the view pivot was wrong in the first place.

Thanks for all advice though.
 
Old 10-22-2012, 10:46 AM   #6
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