fireballs in my render!

[sbarbo]

Hi guys! i´ve a "funny" problem...
Sometimes, and obviously i can`t say why, in my renders appears some white spot, it`s an annoing problem that usually i solve in PS...
here is an example:
(on the glass door on the right)

http://yfrog.com/6zsuppostap

but now, and i´m amazed, here it comes a fireball!!

http://img96.imageshack.us/g/prova1.png/

Someone could tell me where i`m wrong?

Thanks and regards
Sbarbo

[edu1987]

Re: fireballs in my render!

it will be of great help to post ur settings to see what's wrong and also are the spot lights made of emissive material? cause that can be a problem.

[jaymoose44]

Re: fireballs in my render!

I've never had that issue... what are your settings? maybe something is over lapping?

[farukazo_cg]

Re: fireballs in my render!

I had some similar problems previously.
Please check this, I hope help you.

http://forum.asgvis.com/index.php?to...36825#msg36825
greetings!

[sbarbo]

Re: fireballs in my render!

Thanks for the fast reply guys!
here are my settings:


@jhenry44 : i`m quite sure the model is well done and so the texure mapping, i think there is no overlapping...

@edu1987 : the spotlights ARE made of emissive material, and the source light is from exterior in order to create more drama in the scene... in effects adding a rectangular light inside the scene the problem ALMOST disappear... what kind of problems create emissive and there is a limit of intensity??

@farukazo : i checked your post and thicked "affect shadows" and... no more fireballs!!!

So the problem is solved and i owe you a beer...again...
Here is some prewiew with the new settings in low res
http://img97.imageshack.us/g/34710837.png/
if i don`t bother you... any suggestion to improve it?

thanks so much

[edu1987]

Re: fireballs in my render!

nice work good renders; emissive material should NEVER be used to lightup ur scene it may cause some splotchiness in ur render, even if its just a low multiplier, depending on ur camera the multiplier is different, maybe thats what u have in this renders try dissabling the emissive material and render again to see if this splotchiness dissapear

[edu1987]

Re: fireballs in my render!

found it! ;D take a look at this:

http://forums.sketchucation.com/view...?f=322&t=24795

thats the problem of using emissive materials maybe thats not ur problem but give it a try.

[sbarbo]

Re: fireballs in my render!

This is my problem EDU!
and after some tests i´ve noticed that splotchiness disappear using an emissive with intensity 1...
It´s a good news, now i know, emissive has to intended only as a visual effect that simulate light, and not as an integration of light source!
Tons of render could have been better if I had known sooner :'( ...

this old one for example, there are some errors but... you know what bothered me more... fortunatly the customer was satisfied after all!

THANKS!!

[edu1987]

Re: fireballs in my render!

good thing u satisfied the custumer, well now u now so good luck!


btw that kind of glow coming from the lights are made in ps right?

[sbarbo]

Re: fireballs in my render!

yes... that glow is made in ps like some adjustment of hue saturation etc...