Noise, how to get rid of it?

[distroe]

  Hello everybody, please help me with an issue:
  When rendering an exterior view to a house, with grass scattered around it, the texture of the wall ( please see casa anca v6 1) appears very noisy, and the passes are moving very slowly. In 20 minutes there are about 3-4 passes, which removed almost no noise of the wall.  The only workaround i thought of was to hide the grass and render separately, in order to composit in photoshop ( please see anca v6 good, it has much less noise), which in this case rendered faster , having almost 20 passes in 15 minutes.
   May i eliminate noise from some settings, other than default ones?
   Thank you,
   Dan

[mommus]

I don't think it's 'noise' per se - it's just that the passes are taking far longer due to the masses of grass.

I'm guessing you used proxies and multiscatter or similar for the grass, but just looking at the density of geometry on the grass it's really no wonder it's rendering slowly. You're expecting an awful lot of the software there - Corona must be rendering a billion polygons at least.

Try using a more efficient grass - like single blades, rather than the incredibly complex plants you've used.

Also, if you haven't already, try turning off any reflection/refraction/opacity/bump maps on the 'grass' materials.

[drado226]

i dont see noise am i wrong ?
foliage meshs too complicated normally we dont need such as details for long distance shot