Architectural glass for animation

[tricky]

Am I safe to set IOR for refraction to 1.0 for a walkthrough animation? The material editor goes weird.

[thablanch]

I'm never using 1, I tend to use 1.01... Never tried it in animation. Why not using the normal 1.6'ish glass??

[tricky]

I'm never using 1, I tend to use 1.01... Never tried it in animation. Why not using the normal 1.6'ish glass??

One or two of my shots are looking at a piece of glass at quite an oblique angle, so the distortions are quite high. My client is the type of client who would say: "That isn't right. Can you get rid of the distortions please?"!

I'm also struggling with the fog colour at the minute. I'm not sure what has happened since I reinstalled my machine, but the green tint I usually apply to 'in-scene-rendered-glass' is rendering VERY green. I have reduced the fog multiplier to 0.001 and a VERY slight green colour in the colour slot, but it is still looking way too green. Puzzling...

[Morne]

I'm setting my refraction colour to change the glass colour and leave the fog colour at deafult. I find it is easier to control this way
hint: the colour you pick will be MUCH brighter and more saturad so pick a very very slight green colour.

[rivoli]

One or two of my shots are looking at a piece of glass at quite an oblique angle, so the distortions are quite high. My client is the type of client who would say: "That isn't right. Can you get rid of the distortions please?"!

isn't the glass modelled with actual thickness? there shouldn't be any distortion looking through it, unless the window is a single sided plane.
anyway, ior 1,0 it's safe to use, as long as I know.

[Da_elf]

im guessing the same as rivoli on this one

[chrisjacks21]

Yeah I believe the last 2 comments are correct - if your glass geometry has a thickness you should use an IOR of 1.6 - If your glass is single sided poly, use IOR 1.0 (or 1.01)

[stef.thomas]

I agree with the others regarding thickness and IOR. As far as tint goes I tend to use the refraction colour rather than fog, try the following values - H:100, S:5, L:240.

[tricky]

Glass is modelled with thickness.

However, when you look along a pane of glass (with thickness of, for example, 6mm) very obliquely, the thickness you are looking through is effectively greater, meaning bigger distortions, right? Maybe I misunderstand this, but I always figured looking straight at a piece of glass (i.e. perpendicular to it) would give much less refractive 'distortion' than looking at a much shallower angle.

[themaxxer]

I always use an IOR (refraction) of 1.0 and for the (reflection) IOR a 1.6 for the distortion in the bump map but not in the refraction (because of the distortion trough the glass itself)

@Tricky yes in Mateditor it looks weird, but at rendering it's ok.

best regards
themaxxer

[rivoli]

However, when you look along a pane of glass (with thickness of, for example, 6mm) very obliquely, the thickness you are looking through is effectively greater, meaning bigger distortions, right? Maybe I misunderstand this, but I always figured looking straight at a piece of glass (i.e. perpendicular to it) would give much less refractive 'distortion' than looking at a much shallower angle.

not really, light gets bent even when you look perpendicularly through a piece of glass, but 6mm it's so thin that any deformation should be negligible. maybe if you had a 20 cm thick window, you could actually notice a difference.

[tricky]

Maybe I am looking at a piece of problem glass geometry then. It was given to me. I will remodel and see what happens.