vray light mat

[LuckyST]

how do you increase the "distance" of the light generated by vraylight mat?

 

Increasing the multiplyer creates pore results.

 

is there any other way to create light along an complex object (except for planar lights... it would take for ever, since the object looks like this: \/\/\/\...)

[Tommy L]

Probably an exposure issue. Could you post an image?

[LuckyST]

the light should be shining from underneath the stairs, but I want to increase the distance the light shines on, but all I get by increasing the multiplier is burned surface and lot of splotches.

 

 

example of the night shoot

 

http://img406.imageshack.us/img406/2496/58523243.jpg

 

what it looks like in the daylight

http://img9.imageshack.us/img9/7839/40022712.jpg

[aaronrumple]

how do you increase the "distance" of the light generated by vraylight mat?

 

Increasing the multiplyer creates pore results.

 

is there any other way to create light along an complex object (except for planar lights... it would take for ever, since the object looks like this: \/\/\/\...)

 

Define pore (sic) results.... Are you taking about the light being over bright? Or is is not smooth? What shape are you using for the light? I think the issue is more with your AA settings rather than the light.

 

If you're running the latest version of vray - I'd use a spline under the edge of the steps and set the renderable diamiter to about 1/2". Then I'd turn it into a Vray Web light. I've done that for a few ceiling soffits recently and it renders very well.

 

Your steps are very reflective. That wil cause additional problems. Make sure you have enough subdivisions. I'd probably use a falloff map to tone down the reflections if you're going for a polished stone.

[danb4026]

Aaron, I know how to turn a mesh into vray light, but what do you mean by "convert to a vray web light"?

[LuckyST]

Define pore (sic) results.... Are you taking about the light being over bright? Or is is not smooth? What shape are you using for the light? I think the issue is more with your AA settings rather than the light.

 

If you're running the latest version of vray - I'd use a spline under the edge of the steps and set the renderable diamiter to about 1/2". Then I'd turn it into a Vray Web light. I've done that for a few ceiling soffits recently and it renders very well.

 

Your steps are very reflective. That wil cause additional problems. Make sure you have enough subdivisions. I'd probably use a falloff map to tone down the reflections if you're going for a polished stone.

 

 

I was talking about pore results as to what I was trying to achieve.

I was hoping to create light that illuminates up to 1-2 meters away from the surface it self.

I ended up discovering that the "range" of a vraylight mat is determined by it's size (the actual model size-4 meter tall ligh has bigger range than 2 meter tall light)...

 

so in the end,... I ended up beveling it to create bigger surfaces, and after that I made the object invisible.

 

that way I got what I was looking for... but it was a hard job none the less.

 

how do you turn the spline into a light?

 

 

does anyway have any other way of achieve this effect?

 

Edited April 1, 2009 by LuckyST

[danb4026]

If you don't have the latest version of Vray, you do not have the option to turn a spline into an actual light.

 

If you do, you create a vray light and select "mesh" as your type. You then go down to the "mesh light options" and choose the mesh that want to turn into a light source. Oh by the way, you have to actually create the default mesh light (which is a small box), and then go to mesh light options and choose the replacement mesh for it to work right.

[John Dollus]

@Daniel: How does that differ from just assigning a vraylight material from the mat editor to any object?

Edited April 1, 2009 by John Dollus

[rmccoy]

you are able to make the object an actual light. This gives you all the control as a regular v-ray light

[danb4026]

you are able to make the object an actual light. This gives you all the control as a regular v-ray light

 

As Ross said above.

[alfa smyrna]

Hi,

Vraylights attenuate in physically-correct way which means they decay in inverse square of distance. (as in real life).

So if you need a different attenuation, you can try 2 things:

 

1. Instead of using a vraylight, use a standard max light (omni, direct...etc. whatever fits your purpose)

And define how it attenuates yourself from NearAtteuation and FarAttenuation parameters. Then you can be able to havei llumination within the circle you want and control how light decays in custom manner.

 

2. Or you can still use vraylights but put more than one light , trying to fake the illumination you want.

[LuckyST]

I ended up faking it with vraylightmat, (it wasnt easy), but the results are great (on page 1).

They should make vraylightmat more customizable in the versions to come, because at this moment it's not that friendly.

[jinj]

hi probably you just try this setting but any way it's good to know for the future.

in vray there are to ways to increase the the generated light or for any surface.

if you are using 3ds max, right click on a view port, select vray properties and play around with the generate GI variable. as default it's seated to 1 but increasing it to 2 or more depending from the scale you used. in this tab you can select you obj for changing any other value and also give it a mat ID.

the same effect can be done by using a vraylight mlt as sub material of a vraymltwrapper.... than you have the play with the same setting up explained.

hope that's for what you was looking for.

jinj