Vray Glowlight

[phizikl]

Is there the possibility of getting more glow lighting possibilites in the future?

Doing post glow always has drawbacks, is not in reflections, doesnt look so good, have to render several matte layers etc.

I can get an object to glow with Vray if i set it to vray light material, turn up receive/genrate GI alot, and then have to crank up the divisions alot in order to get smooth glow on surfaces....

What about integrating new type of render effects that are rendered after the scene is done, but still regarding 3d information, like Cebas Final DOF and MBlur for example...

Would be great to have a way of having objects glow light around them, eithier by really lighting the objects around it, or by just having a glow around the object (fast and slow method)

I just wish there were more possibilites of getting a good glowing effect inside vray without the need for heavy GI calculation... be it in the form of a new shader, vray render settings or a new type of semi-post render effect...

any input is appreciated
thanks
ian

[vlado]

It depends on what kind of glow you need - a post effect (like a glow/glare filter, which is already in the works btw), or a fog glow similar to what you would get with VRayEnvironmentFog?

Best regards,
Vlado

[sumario]

I will love to have a Vray Lens & Flare like fryrender, all done in post, I think fry doesit as post anyway.......

[Da_elf]

problem with most of the effects filters in max is that they dont line up with the vray camera

[simmsimaging]

Maybe you guys could clarify: I've never understood why people want this in the render engine instead of doing it in post. I prefer (and need) the flexibility of adding it later. Is there a technical advantage to having Vray do it? I can't see why if it's being done as a post effect there too.

Thanks /b

[instinct]

I prefer post too. But there are some advantages like properly showing in refractions and reflections, proper blending with atmospherics etc.

Regards,
Thorsten

[simmsimaging]

I prefer post too. But there are some advantages like properly showing in refractions and reflections, proper blending with atmospherics etc.

Regards,
Thorsten

I can understand that (it's why I prefer to do DOF in camera rather than in post - when I can anyway) but wouldn't that only apply to an actual render-time lens effect? I thought the Max and upcoming Vray options were post-render effects.
b

[vlado]

I prefer post too. But there are some advantages like properly showing in refractions and reflections, proper blending with atmospherics etc.

Regards,
Thorsten

Not really following this; a glare/bloom effect happens in the eye/camera and has nothing to do with atmospherics, refractions and so on - only with image brightness. A volumetric halo is another matter - it is just a side effect of volume scattering, but you can get that anyways with e.g. VRayEnvironmentFog.

Best regards,
Vlado

[simmsimaging]

Not really following this; a glare/bloom effect happens in the eye/camera and has nothing to do with atmospherics, refractions and so on - only with image brightness. A volumetric halo is another matter - it is just a side effect of volume scattering, but you can get that anyways with e.g. VRayEnvironmentFog.

Best regards,
Vlado

So would it follow that there is no technical advantage to doing the flare/bloom effect in Max/Vray over post, other than convenience?

b

[vlado]

So would it follow that there is no technical advantage to doing the flare/bloom effect in Max/Vray over post, other than convenience?

b

Yep.

Best regards,
Vlado

[crazy homeless guy]

I think there is a difference when using Mental Ray glare rendered in, compared to a Mental Ray glare rendered and then composited in post. I have never been able to get the post effect to look as nice as the rendered in effect.

Of course there are major disadvantages to burning it in also, buy the rendered version always felt natural, and my post version of the same thing felt forced.

[instinct]

Erm...good point...no idea where i had my mind. And a post glow/glare triggered by brightness would of course also happen in a reflection or refraction that is bright enough *head on the table*

There is a lack of physically based post filters tho..../me writes a memo to himself :P

[simmsimaging]

True. Have you looked at Richard Rosenman's filter Lumiere? Maybe not useful for animation though, not sure.....

http://www.richardrosenman.com/software/

b

[Pixelcon]

the mental ray glow was great as it could be rendered out as a seperate element and used in post.

edit: didnt see the above posts!

[vlado]

I think there is a difference when using Mental Ray glare rendered in, compared to a Mental Ray glare rendered and then composited in post.

Nope; there isn't any difference at all. However you need HDR information for proper glow, and of course you lose that if you save to a LDR image format.

Best regards,
Vlado