@Lisboa Neto: 1) When I say linear in textures, I was talking more about the output rather than the input. Most textures start from jpg’s or 8 bit tiff’s anyways so outputting things like color maps and normalized maps (spec) as 8 bit linear tiff’s or linear exr’s is very useful for linear workflow. Most renderers support mipmapping of textures which I highly recommend, that should save you a ton of calculation in render time. So, mipmapped linear textures (8-32 bit) should give you great results.

2) What I was talking about with linear materials was, on the floor in spider-man for example, I had a layered material where the base material was the main material with color, and a rougher spec, and the top material was a more shiny, spec only material that simulated the varnish on top of the flooring (just like a carpaint shader). The difference between the two spec profiles gives great realism to clear coated surfaces.

3) Sorry, I have no experience with bakery relight.

1)You’ve talked about work with linear images from start to finish, at
least 16bit images. So for most of students or artists that use
textures collected from websites, and most of the cases those guys
don’t have a render farm to work with the type of great textures that
you’ve have discribed. My question is should I work with “custom
16bits png or tiff textures” made from different photographs
manipulated with the intention to extract most data as possible from
each photograph sampled? Do you think it will increase a lot my render
times because of that? I’m already considering that the final render
is 32bit exr 720p at least, considering that now a days even for
students this is standard point to get good results, and it’s possible
with our desktop computers render over night a few seconds of
animation.

2)You’ve said “In most cases, a layered material with a rougher base
material that defines the color and base spec under a fully refractive
shinier clear-coat material with spec alone will give you great
results.”
Are saying that in the amazing spider-man scene at school hallway that
you’ve talked about, you created some kind of material that are a
blend between a glass reflective/refractive and a base spec rough
material? Or when you said refractive shinier clear-coat material you
mean a reflective shinier clear-coat instead? Is that right or did I
get it wrong. Could you be more clear or exemplified better to me?

3)You’ve spoke about relighting in katana, have you heard about bakery
relight tool? What could you say about?

Thanks again, can’t wait to see what people think about it, and also I’d like to hear from you too Cosku^^.

Best,
Van der Graft