A lot of noise in my blurry reflections

Post your tutorials and help questions in this forum
Locked
thomas
Posts: 348
Joined: Tue Aug 31, 2010 9:59 am

A lot of noise in my blurry reflections

Post by thomas »

kray-Test.jpg
Hi!

The image attached is a bottle with blurry reflection, at 80 percent blurring. The lighting is done with luminous polys that are invisible to the camera, but are seen by rays. The problem is that there is a lot of noise in the bottle surface as you can see, even at "high" settings, giving the impression that the surface is rough or sanded, while it should be perfectly smooth and matte. Maybe a tiny bit of noise would be okay, to give a satin finish, but this is too much noise.

Is there any way to get rid of this noise, without having to crank the settings up to one gazillion rays? Some specific setting or maybe even a special header command?

Thanks,
Thomas
User avatar
Janusz Biela
Posts: 3265
Joined: Mon Mar 13, 2006 10:39 am
Location: Finland
Contact:

Re: A lot of noise in my blurry reflections

Post by Janusz Biela »

Show Quality Tab from Kray, please.
thomas
Posts: 348
Joined: Tue Aug 31, 2010 9:59 am

Re: A lot of noise in my blurry reflections

Post by thomas »

Sorry, that was a stupid question. I just needed to set the min and max number of rays for reflection higher. Perfectly logical, so I should have known that!

Thx,
Thomas
User avatar
nico
Posts: 602
Joined: Thu Feb 08, 2007 1:21 am
Contact:

Re: A lot of noise in my blurry reflections

Post by nico »

sorry i can't render with this problem...noise in reflection blur.
who can help me?
i need of surface with reflection + blur...this result isn't good!!! :wink:

i've used uncached but the effect is this!!!
Attachments
quality tab
quality tab
noise on ceiling
noise on ceiling
noise_3.jpg (35.26 KiB) Viewed 4788 times
noise on wall
noise on wall
User avatar
Janusz Biela
Posts: 3265
Joined: Mon Mar 13, 2006 10:39 am
Location: Finland
Contact:

Re: A lot of noise in my blurry reflections

Post by Janusz Biela »

200/600 is too less. Try 500/1000 or 500/2000.
User avatar
nico
Posts: 602
Joined: Thu Feb 08, 2007 1:21 am
Contact:

Re: A lot of noise in my blurry reflections

Post by nico »

with 2000/5000 no problem!!! :oops:
thank's
User avatar
Janusz Biela
Posts: 3265
Joined: Mon Mar 13, 2006 10:39 am
Location: Finland
Contact:

Re: A lot of noise in my blurry reflections

Post by Janusz Biela »

nico wrote:with 2000/5000 no problem!!! :oops:
thank's
Please notice also this: If You use high level of quality blur (2000/5000) this means You have probably too strong luminescence..... I try keep maximum level 500/2000.
User avatar
Janusz Biela
Posts: 3265
Joined: Mon Mar 13, 2006 10:39 am
Location: Finland
Contact:

Re: A lot of noise in my blurry reflections

Post by Janusz Biela »

I think min/max for Area also is too high. Personally I use maximum 2/4 (for fast preview render: 1/3)
User avatar
nico
Posts: 602
Joined: Thu Feb 08, 2007 1:21 am
Contact:

Re: A lot of noise in my blurry reflections

Post by nico »

thank's Janusz for explain :mrgreen:
Locked