Unfortunately I’ve tried playing with both your solutions but problem is still there. Really really strange.
I’m gonna try and investigate further on this issue ’cause having to proof-render every single map everytime is just crazy :\

Thank you jenni

All of the Autodesk Material Library materials use “Real World Map Scale” and, depending on you scene scale, may appear 12 times too big or 12 times too small (10 times for metric). Add a UVW Map modifier to your objects with the Real-World Map Size enabled, and adjust the material in the Material editor. You can also (perhaps instead) add a Map Scalar modifier and adjust the Scale value to change the size of the map.

It’s mental ray that is totally messing with the mapping coordinates when I try using any material from autodesk material library. Mental ray seems to render maps with wrong tiling parameters. To better explain the issue: in the viewport preview I can see a map’s tiles are of a certain size; when I do a render those tiles turn out WAY smaller (I’d say 10 times smaller…).
Note that Quicksilver renders all the maps with correct parameters…
I guess those last paragraphs won’t make much sense to an english speaker lol, sorry for that.

Anyway, I don’t wanna bother you.

Thank you Jenni

Jenni

A little thing I’ve noticed: it seems there’s some issues with objects’ uvw coordinates when switching from Quicksilver renderer to Mental ray and vice-versa. Have this occurred to you?

Again, thank you very much for the help.
Regards

If you right-click on the header of a Group or Library (for instance the “Materials” group or the “mental ray” materials) choose the “Display Group (and Subgroups) As” option and then the “Small Icons”, “Medium Icons”, or “Large Icons”. When you do this with the built-in materials you get some interesting previews!

Jenni

I appreciate your comments; I like to hear what people expect from a book.

So i’d like tricks for best photographics result, but also for faster fake rendering.

But I would like the same book located on Maya, whith an advanced section on animation.

Then Architecture and Design are essential topics. Ie how work at your best with Maya, when your customers use Inventor or other cad program?

I tried to learn Maya using books written by Max, but I get often confused.
So I had to resist the first impulse to buy your book, which I found very interesting when i watch the TOC… but unfortunatly for MAX.

In any case I do not like tutorials that give you values you have to enter in settings windows.
I prefer to learn a theoretical method teaching me to think and understand how it works under the hook,
then to be able to find the most appropriate setting by myself.

I.e., after a deep explanation of how GI works, I think a good way to teach how setting to use, is a flowchart representing the pipeline to be followed to optimize the scene.
I hope my english isn’t so bad…

What would you most like to see in a Maya book?