mental ray shadow proplem

[junghc1]

I’m sorry, but I’m not good at English.
When I rendering in my scene, vray is able to show proper shadow in alpha.
but, mr is not show proper result.
I want just shadow by sphere. not by caw it self.
Is it possible in mentalray ?
my render image & scene file address: http://fanchul.tistory.com/16

[steve]

want just shadow by sphere. not by caw it self.

Looks like you want to avoid self shadowing (of the cow surface). You need to disable "cast shadows" on the cow object.