Mental Ray for Maya Issues

I am currently testing MR for Maya 1.5 Beta.
I guess there are a few things still missing:
- no interactive Rendering
- no field rendering
- no colored shadows from transparent objects
- no colored fog shadows
- no shader or light glows (no post effects at all)
- no soft reflections

is it just me or is the MR-Maya Implementation so much slower than the old Maya Renderer? The XSI MentalRay Version seems to be much faster than the MR-Maya Version.
I also had big problems rendering big scenes with more than 800'000 Polys - maya did it but MR crashed all the time (no GI active, all textures iff).

But, for me the weakest Point in Maya 4.5 (with MR) is:
there is still no good field rendering solution. Maya's Field Rendering quality still sucks and MR can't do it too. So we still have to render at 50 FPS and do the Field Rendering in Aftereffects or equal. Look at Cinema 4D (V7)'s field render quality - thats a big difference to the ones from maya. Or am I wrong?

I donot think that field rendering is at the top of the list for most people - if you are concerned with post process effects, then I can see why you have issues with maya's field rendering - you simply cannot do it. You will probabally need to render at 50fps at 720x288, with an aspect of 4:1.5 and just plan on stretching it.

coloured shadows from transparent objects is there. Just set the colour of the transparancy from grey to whatever colour you really want.

setting the color of the transparency does change the look of the object. Does anybody know how to avoid this? Renderdrive for example does it correctly, but this machine has other limitations :frowning:

About the soft reflections. Yeah, it would be cool to have them but man, they are so slow. I usualy do this in post, simply render out a reflexion pass and add a blur in post. Much faster!
The same with motion blurred shadows: Shadow pass+motion blur in post.
Cheers