Grainy image

V-Ray V-Ray Common Gallery
1

Hi,

Here is an image I’m working on at the moment, as you can see it is a little grainy. I seem to get the same problem with all my interiors when I put a vray light outside the windows, has anyone got any ideas how I can solve this please?

http://www.e3di.co.uk/image.jpg

My settings are as follows:-

http://www.e3di.co.uk/grab.jpg

Any comments you could give me would be much appreciated.

Cheers

Neil

2

:shock:
Not sure, some parts are very clean yet some are grainy. did you try increasing that vray light samples?

3

Another thing, i’ve never seen someone using that kind of exposure, with bright multiplier increased and darkness reduced. Usually bright is left alone and dark is increased. Why are you using it like this, why cant you just increase your light multipliers?

4

as dusan said you might need to bump up your light samples but noise in the wall material can alos produce that sometimes…don’t know if you have that on, though…

paul.

5

You might want to turn down the glossy reflection of the wood floor.
It looks very slippery.

6

It looks like you’re using every possible technique to get light into that room. Your Environment is set high, your Diffuse bounces are both set extremely high and you’re using Color mapping. I would think that some of this is unnecessary.

Do you have a bump map on the walls and furniture? What are your light settings?

--Jon

7

Wow, thanks for all the replies.

No there is no bump or texture on the walls it is just a standard vray mat set to white.

I was just messing with the dark and light multipliers to get a nice ambiance in the room, I guess I need to revisit my settings!

Anyone got any suggestions with regards to settings for a scene like this?

At the moment I have a direct light and a vray light at the window.

Thanks again :smile:

Neil

8

its your lights dude…
crank up the subdivs for the lights… to around 25 :wink:

9

25 :wink:

if that doesnt remove all the grain nothing will :slight_smile:

Try bluring the reflections a bit more or reducing its amount, it looks waaaay over polished or even as if some liquid is spilled all over it. And that sharp line above the door on the far right, seems somewhat wrong, might be something wrong with the irradiance map.

10

25 for a window of that size dusan is not high. it looks like he has store with irr map unchecked and his light subdivs are around 8 … for a window of that size is way to low and you will get that grain affect.

11

Actually i didnt know subdivisions are size dependant :sweat_smile: :sweat_smile: :sweat_smile: :sweat_smile:.

12

yep

13

Hi All

The sub division fixed it, thanks a lot for all your comments. I’ll post another image when its finished.

Cheers

Neil

natty 14

:wink:

15

hi :slight_smile: I am very new to v-ray- just trying to discover.
would you please tell where that setting is located? I am very sorry if it is a funny question :roll:

16

create a very light … go to the modifier panel and you will see the parameters of light, down the bottom you will see light subdivitions of the light .. this only works you you untick store with IRR map.
this option will create better detailed shadows and it helps to enhance details in your scene, but you will have longer rendering times… :wink:

17

Is better to use store with irrad map?

To get better quality lighting

Is better to use store with irrad map or not in light source panel?

And I didn’t understand if the subdivions of light is dependant on the dimension of the light or dimension of the whole scene?

Thanks in advance

18

the bigger the light the larger amount of subdivisions you need.
i tend to always use vray light with save with irr map unchecked it will produce finer shadows and more detail in your scene as i said before. Try it

19

thanks :slight_smile:

20

Thank u a good tip

Thank u a good tip

I didn’t know

thanks natty