how to get render more crisp?

[heppy]

i am pretty new to 3d studio and i have done a render using radiosity with ies sky providing the light from above into my art gallery space.

my problem is to the bottom of my render i see kind of dark spots or fuzzy bits and the top is quite crisp is there any way to make the render more crisp? thanks any help would be appreciated.

[anthony cortez]

Try changing your antialiasing filter setting to Catmull-Rom

[kdavenport]

I assume that your talking about splotchy black spots on your image (called artifacts). If so, these are due to the radiosity calculation and antialiasing will not fix them. It also may be the smoothing groups...

 

The first thing I'd try is putting a smooth (not Meshsmooth!!) modifier on the objects that look splotchy and checkbox Autosmooth.

 

If that doesn't fix it, youv'e got 3 choices. Radiosity is based on the mesh, so more divisions will give you a better solution. Of course, this ups the polycount and that's no good!

 

So, you can either up the Refine Iterations in the Radiosity panel, which may improve the render assuming there is adequate surface info. You can also up the Indirect Light Filtering steps; this will blur the radiosity solution and will probably get rid of the splotches. Finally, you could turn on Global Subdivisions under the Radiosity Meshing rollout as this will adaptively divide the mesh for the radiosity solution only (it won't actually add more surface info) and, if adaptive is chechboxed (it is by default), it will only add divisions where you need them.

 

Hope it helps!

[tommyjj]

Or you could add another light in the scene but make it's effect much more discrete. Maybe try adding a skylight with a very low multiplier.