Maya renders and Houdini renders are not matching

[cgvfx]

Hello Everyone,

 

                           I am importing a cam from maya to houdini through alembic.Its importing correctly but when i take the renders from maya and one more render from houdini both the renders are not matching,i can see the position and scale of both the renders is not matching.I tried to use the same unit scale in houdini and maya but still its not matching.Kindly help.

 

 

Thanks

 

[gui]

try to bake the camera animation in maya before exporting. Everything should work fine!

[cgvfx]

Hi GUI,

Thanks! I had done the same, baking the camera out of maya.Main problem is the object from houdini render coming little bigger than maya render,position is almost coming same,i have red through the forums might be the focus length I m not able to make out.

[gui]

Do you have depth of field? That would be a problem!

 

But I don´t think camera focus causes size problems, perhaps overscan? In Maya, overscan is easy to do since is automated, but in houdini you will have to make some expressions.

 

Which build have you installed? As far as I remember, SESI corrected some translations from the Maya camera to houdini´s camera several builds ago...

[jopa79]

did you use vray in maya ?

[pbarua]

I always prefer to export camera as FBX over alembic.

You need to set units correctly in fbx settings.

[pbarua]

Did you scale down your camera?

 

If yes, that's not a good option. Set export units to metrics.

[pbarua]

Rather than scaling down camera in Houdini to match Maya(CGS) and Houdini(SI) units, I have a CHOPs solution.

Check this:

 

https://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=35276&highlight=

[murathan altunsoy]

if you can check focal length and apeture then you will see.i saw same problem

[gui]

For me, the alembic workflow works fine with arnold in maya.

[butcherman]

So, I am having the same issue but am using Vray physical camera in Maya.  My renders are not matching up at all.  I've got my camera scaled to 1 after grouping then parent constraining & baking keys.  Seems to work with a regular maya camera but not with the Vray physical camera ticked in extra attributes, and I've already spent 2 weeks rendering in maya.  Does anyone have a suggestion as to how to resolve this?

 

Thanks

Edited March 7, 2017 by butcherman