rendering issues zdepth + Frischluft

[johannabreuch]

Hello!

 

I have a problem with the renderin of the zdepth. I'm using 3ds Max 2014.

I've made a little scene with ambient occlusion and wanted to make use of the zdepth layer to play around with frischluft. The thing is that I can't get the zdepth layer right sraigth. Either it is not strait and aliased (rendered with mr) or it is straight but antialiased (rendered with scanline). With both results I'm not able to get a perfect blurred picture without any errors.

There is always a sharp edge to some objects (it's worse with the mental ray result than with the scanline)

I have to say I'm an absolute beginner and just started to learn. I also asked a guestdocent of my university about this, he also couldn't figure out where the problem is.

It would really help me alot if somebody knew what to do, I'm loosing my mind on this!

Here are some pictures to show what I mean,

 

Mental Ray + Frischluft

 

 

Scanline + Frischluft

 

 

Thanks in advance,

YoShe