Here's another one
Quads + Tris

Hi DesuDeus, that does not really look like a geometry smoothing problem - is it possible that your object is particularly small or large and is running into some kind of distance related bias value in Maxwell?

Also your image looks pretty grainy in other spots, it could be possible that you just need to give it more time to crunch away to get better render quality on highlighted areas, the unbiased render mechanisms can be like that.

What does it look like if you use the built in C4D renderer instead of maxwell, does it look all proper there?

- Michael

Hi DesuDeus,

> Here's another one
> Quads + Tris

Looks like the same thing - probably not a problem with the geometry, more likely you need to give Maxwell more time to get more samples processed for the highlight areas.

Again, what does it look like if you use the regular plain C4D render rather than Maxwell, do you see problems in the built in C4D renderer or only when you use Maxwell in particular?

- Michael

Funny there are a lot of French faults words on the Riptide UI ;)

Here's in triangles
+ a render with no noise

My object is 29mm by 56mm by 146mm in MoI

It's scaled correctly in Cinema 4D (everything is scaled correctly, using an HDRI for light)

Here's another test without riptide pro

Hi DesuDeus, is the "no noise" one also done in Maxwell, or is it done in the C4D default renderer like I was asking about above?

Do you want to post the 3DM model file so that others could take a look at it and see if they can give you some tips about it?

Maybe Maxwell in particular is sensitive to something.

Do you have the normals tag in place when you are doing your renderer? Have you possibly done any kind of editing of the geometry that might invalidate the normals tag?

- Michael

The no noise version is maxwell yes

Here's the 3dm of the handle (in mm)
https://dl.dropbox.com/u/44982094/handle.3dm

The exported obj + mtl (triangles)
https://dl.dropbox.com/u/44982094/handle.obj
https://dl.dropbox.com/u/44982094/handle.mtl

It was build from two extrudes + fillets and the bigger part is a sweep + scaling rail + filets

Hi DesuDeus, I'm kind of losing track of what you're trying to show.


> Here's another test without riptide pro

Those seem to be looking good, is there a problem there?

Is it possible that your HDRI image is somewhat lower resolution and causing additional artifacts because of that?


It looks like you've got a screenshot there of the default C4D renderer which does not appear to have any kind of artifacts in it at all. If you're getting bad results specifically from Maxwell renders you will probably want to go to the Maxwell forum and see about getting some tips about what you can adjust in the Maxwell renderer to improve things, maybe you need to mess with some settings or use a higher resolution HDRI image or something along those lines.


- Michael

Does the "avoid smaller than X" can cause shading issues ?

The HDRI is high resolution and well made.

I will try to export my whole model again in ngon and use riptide pro with a phong angle of 5° + normals

Hi DesuDeus,

> Does the "avoid smaller than X" can cause shading issues ?

Well, it makes for rougher and coarser meshes being made on smaller sized pieces.

That setting is for making small sized details (ones smaller than the distance value that you put in there) to be done with a much rougher angle so things like little tiny fillets will use only a small number of polygons rather than little sized rounded pieces using the same number of polygons as regular sized polygons.

You should generally only use that setting if you are trying to optimize for a lower polygon count. If you're trying to get a high detail model don't set that at all (or set it to 0 to clear it), since it's all about reducing mesh density.

- Michael

Hi DesuDeus,

> The no noise version is maxwell yes

It looks like the "no noise" version does not have quite the same amount of problems that you are indicating in red arrows in the other attached image above, is that correct?

It seems to me that you probably have some different parameters in Maxwell that are not working well with your situation - if that's the case the solution is going to involve controlling those things in Maxwell, not anything to do with changing how the geometry is imported.

Again it looks like there are no artifacts on the render done with the built-in C4D renderer, is that correct? Or do you see any problems in that render too?

If you see no shading problems of any kind in the C4D built in render but you do see strange things in Maxwell, that tells me that Maxwell in particular does not like something about the model or environment or parameters that you are currently using, and if that is the case you will probably need to make some adjustments to make Maxwell more happy about the whole setup. You'll probably need to get some Maxwell-specific tips if that's the case.

Maybe some other C4D users will be able to test with your model to verify if they're able to get it over ok or if they see any problems too.

- Michael

No problems at all. Export with Ngons. Import with the native importer from C4D.






Peace,
Rich_Art. ;-)

Hi DesuDeus, here's what I get using the built-in importer with your same .obj file and using built-in render:




I can't see any hint of problems there at all, so that tells me that you're probably looking at some stuff specific to Maxwell and you'll likely need to get some tips from the Maxwell forum for how to tweak things to make it happier.

You also might try putting in just a plain sphere created directly in C4D and rendering it at the same time, do you get the same kind of artifacts there? If so then it's something related to render settings or the HDRI you're using and nothing to do with geometry transfer at all.

- Michael

Hi:i opened your exported file in C4D,i saw you made two selections so i applied two materials
set-up scene then export to ARION 2

engine=Unbiased
f=8
shutter= 250/1
focal lenght=35mm
iso=500
tonemapping=Agfacolor Ultra 050
opened in PS just to insert logo,no retouching at all.

M

Nice render.. :-)

Peace,
Rich_Art. ;-)

your render is nice too,Rich..considering you did it just with C4D..i think if you do it in VRay you'll get same results
i see few guys on the other thread asking about Arion2:this is an Arion shot !
i'll post more Arion images soon,(i'm doing an heavy project..needs a lot of work..)


this handle is simple but cool,Shapenoid:my compliments !
so you got 3 elements:
1)the model
2)the HDRI lighting image
3)the render engine

something failed and you have pointed the finger on Moi that seems to be the wimpy ring of the chain but it isn't !
i know..Maxwell is out of suspects of course...but here,at home,sometimes we used to say that Mercedes cars can break too (i hope you'll understand what i mean)

Thanks.. Mostly I render with VrayforC4D myself. :-) Although the new R14 physical is great as well.


Peace,
Rich_Art. ;-)

Just for the input, I get lots of trouble with maxwell too.
Well the problem is often the export plugin that send the geomtry into maxwell ... for some reason the vertex normal is lost, or discard.

It happends to me with modo to maxwell and 3dsmax to mawell ... for both package the MoI object was rendered fine using native render engine.

The only way to succesfully export moi geometry into maxwell with 3dsmax was to use npower nurbs for max ... but it's a really expensive solution (and I get many trimming
surface trouble when I test it).

That said it was 6 months ago ... maybe they fix it with recent release.