render Maya problem 2017

[Vara]

Hello everyone,
are at the very first weapons with graphics processing software, forgive the obvious question!
I am making simple makers with white lambert material and directional light and arnold rendering engine: the elaborate image comes with an annoying dotted effect that even changing parameters I can not remove. possible solutions?
thanks to all for the help

 

[Tristus]

possible solutions?
thanks to all for the help

for architectural rendering I recommend vray or crown maker which are currently rendering engines on top of the list of favorites from architects and engineers.
the crown maker in particular is easier to set up, as it is a unbiased, unlike the excellent vray in which the set panels are really many.
As for your problem, you should see the settings you gave to render. without a screenshot you can't judge.

Have materials been created well? misconceptions in the creation of materials can mean times of rendering far higher or annoying effects as in your case.